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Montpelier Flood Watch 2007 Public Flood Monitoring Page Archive
This archival page shows how the City of Montpelier kept its citizens informed of a potential flood situation in February and March of 2007.
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Update from City Manager:
Wrap Up Message 4:15 P.M., Monday, March 26, 2007 Thank you very much to the many of you who have sent such nice messages this way. I was trying to keep up and reply to all of them but have been overwhelmed with your kind thoughts last night and today. Believe me it means a lot to me personally and to all of us at the City to feel that we've been of some help. Thank you, too, for all of you who took this matter seriously and took affirmative steps to protect yourselves, your properties, your families, your employees, your inventories. I know this was nerve wracking and inconvenient. There will be some more formal wrap up later but I wanted to offer some closing comments right now.
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Update from City Manager:
IT'S OVER - NO FLOOD IN 2007!!! 7:12 P.M., Sunday, March 25, 2007 We watched a massive amount of ice break free near the high school and flow on out past the Interstate Bridge. Thanks to great weather which melted out the ice perfectly and a channel opened by the crane and wastewater effluent the ice was able to move right out. It was a most impressive sight once it got rolling. Many thanks to all of you for hanging in there for over two months. Breathe easier, its all over for this year. Many thanks, too, to Vermont Emergency Management Agency, Cold Regions Research and Engineering Lab, the Montpelier Police, Public Works and Fire Departments and the many other agencies and individuals who have helped out with this. I'm way too excited and worn out to type any more right now. ...back to top
Update from City Manager:
This Situation Should be Over Soon 3:30 P.M., Saturday, March 24, 2007 We expect the flooding situation to resolve itself one way or the other within a day or two, possibly even today. The warming temperatures continue to melt and weaken the ice in the river. With the exception of a small jam of broken ice near Gallison Hill Road, all the upstream ice is beginning to break up and move down the river. It is located now between the Granite St Bridge and the Main Street Bridge. It is moving slowly since the river level is low. I observed an open channel of water opening up ahead of this ice, stretching out beyond the Hunger Mtn Co-op. Further downstream, all the ice from the Dog River has completely moved out leaving wide open river. Channels are freely flowing from about DET to the Interstate bridge. There remains some significant ice from the Bailey Ave bridge to about DET. The warm weather and water is weakening it however and we have observed frazil ice floating out from underneath this ice so, presumably, some of the freeze up jam is starting to break down. We expect the most movement today to occur between 3 and 5 Pm when the air and water are the warmest. We see no sign of rapid river rise which would lead to a fast break up and greater chance of jamming. Some rain and maybe snow are expected tonight but not enough to create a problem. Everything is going as well as we could hope right now. However until the ice has substantially moved through past the interstate bridge we will have some concerns. Looking at the weather forecast, it seems very likely that the ice could be out by tomorrow or Monday and maybe even tonight. On the other hand, if its going to jam it will most likely be today or tomorrow. I know this has been a long process for everyone. Please hang in there and keep watching and listening. Something is going to happen to end this within a day or two. Right now things look good and like they are going our way. But as long as there is substantial ice in the river we need to keep our guard up. City of Montpelier, Vermont Emergency Management, Corps of Engineers and other officials are remaining in close contact all weekend long and are performing regular river checks and updates, Thanks everyone for your patience and diligence. ...back to top
Update from City Manager:
Things Look Good Today 12:30 P.M., Friday, March 23, 2007 As of noon time, things look good. The ice on the river continues to melt and weaken. The jam near the Dog River has moved out and there is just open flowing water there now. The "leads" of open water continue to lengthen and widen. There is still a lot of ice from the Main St bridge up to the Stevens Branch that needs to flow out. We don't have depth measurements on it this week but it appears to be weakening substantially. The river is rising at a slow and expected pace due to the melt and run off. We expect a peak in mid-afternoon when the release from the GMP Hydro dam in Marshfield comes through. If all does well, that rise will break up this weakened ice and flow it out of here. Of course it is still possible that it could break up and jam but that scenario is looking less likely. I'm not ready to declare this over yet but I will say that all indicators are very positive right now. Keep your eye on things from about 3 to 5 this afternoon, that could potentially give us a really good idea of which way things are heading. ...back to top
Planning Director's Note:
Contractors for Flood Recovery 9:00 A.M., Friday, March 23, 2007 In our efforts to help citizens of Montpelier in every way possible in the event of a flood, we have been compiling a list of people who can be called in the event of a flood to help with the clean up. Note that the provision of these names does not constitute an endorsement by the City of their services.
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Update from City Manager
Conditions Look Favorable Today 5:30 P.M., Thursday, March 22, 2007 Weather conditions seem to be in our favor. The recent warm weather appears to be weakening the ice and raising the temperature of the water in the river. It has not, however, resulted in a rise in river level which is excellent news. A breeze added to the warmth has caused a lot of snow to evaporate rather than melt and run off into the watershed. Weather forecasts indicate that we will see 5 to 7 days of warm weather with very little precipitation. We couldn't ask for a better scenario. This should lead to a slow melt of the river ice from both the warmer air and the warmer river water. If it stays gradual we will not see a rush of current and accompanying rapid ice break up. Hopefully by the time the ice does break up it will be sufficiently smaller and weaker so as not to cause any major problems. We're seeing more leads of open water in the river and some settling down in the jam areas. The crane is still working, the sewer effluent is still running. If the forecast holds we could be in very good shape. As predicted from the beginning, our best strategy is to have cooperative weather. That hasn't changed. I'll note, though, that the current forecast calls for slight rain around Monday or Tuesday of next week. If that changes to heavy rain we could still have problems. Hang tight, we should have a really good sense of how this will all come out by next week. The following is the press briefing issued by the Vermont Emergency Management Agency today: The latest forecast from the National Weather Service suggests a warming trend for the next seven days with only traces of rain for Montpelier and most areas of Vermont. This is good news in flood prone areas as ice melt and runoff should happen gradually and not raise rivers to flood stage in the foreseeable future. This is not a guarantee that flooding will be minimized, however. Weather patterns often change in Vermont and can sometimes change quickly, and could still lead to flooding around the state. Residents in flood plains of Montpelier and other parts of the state are encouraged to be aware of water levels in rivers and streams, to take note of rising waters and to tune into radio and TV broadcasts for weather and flood updates. ...back to top
Update from City Manager
Frequently Asked Questions 1:50 P.M., Wednesday, March 21, 2007 We are getting many questions about this potential situation. I will address some of the more frequently asked questions and comments.
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Update from City Manager
Holding Steady today, Alert for the end of the week 6:30 P.M., Tuesday, March 20, 2007 The cold weather through the weekend will reach its low point overnight. Its expected to potentially reach record lows for this time of year, possibly 10-15 degrees below zero. This has all served to tighten up the ice in the river and stabilize any movement that began last week. The positive side of this is that river levels have dropped back to where they were before last week's rain and warm weather. This means there is a lot of room for rise in the river. It also means that some of the upstream sheet ice that we were concerned about cracking and breaking up may have frozen back solid. The not so positive side of this is that the cold weather has also tightened up the frozen obstruction downstream. In essence, we've reset the clock to to where we were at the beginning of last week. Beginning Wednesday afternoon, we expect to see rising temperatures. On Thursday we expect to see some rain and freezing rain. Right now we are not expecting a large volume of rain so its possible that this new snow pack will absorb a lot of it rather than having it run into the river. From Thursday to Friday we expect the temperature to stay above freezing and the highs could get into the low 50's. This warm air combined with the expected rain will create a situation which calls for heightened awareness. We will probably see a very similar situation to last week. Weakening ice and rising river flow. Our concern will again be the break up of upstream sheet ice flowing into the freeze up area and creating a blockage. A piece of good news is that last week we had three days of above freezing temperature and heavier rainfall. We;re looking at one less day and less rain this time. After Friday we go into what should be an ideal weather pattern for the ice - 40's in the day and 20's overnight. The city has resumed putting the treated sewer outflow into the river and will begin using a clamshell attachment on the crane to attempt to lift some of the ice out of the river. I hope everyone got some rest and a chance to breathe easier these last few days. Please be assured that we will have all of our systems in place for Wednesday, Thursday, Friday and into the weekend if need be as we watch this weather pattern and its impact on the ice. ...back to top
Update from Planning Director - Communication Tips
10:45 A.M., Monday, March 19, 2007 Good morning! Here are a couple of pointers for those of you who want to have as much communication as possible about the potential for flooding:
Gwendolyn Hallsmith, Director Department of Planning and Community Development ...back to top
Update from City Manager
12:30 P.M., Friday, March 16, 2007 The best news was that we did not have a flood. The National Weather Service cancelled the flood watch for this area in the wee hours of this morning. Yesterday, however, was a very tense day. Warming temperatures, rain fall and heavy snow melt lined up perfect conditions for ice break up and jamming. The two indicators we watch most closely ("rate of rise" - how fast the river is rising - and "stage" - the actual river level) were in perfect sync with the statistics from 1992. Fortunately the upstream ice was still thick enough and hard enough that it defied predictions and didn't break up. It was a very dicey situation for a long time. After the rain stopped and temperatures starting dropping we thought the risk had passed temporarily. However the water level kept rising and two things happened. The first was that an ice jam on the Dog River in Berlin released and washed into the Winooski, right at the end of our freeze up jam. This can been seen from lower State Street just beyond the interstate overpass. The second thing that happened was that we experienced some upstream ice break up in the area of Gallison Hill Road, just before the confluence with the Stevens Branch. This was our first sign up upstream break up. With the jam, the breakup and still rising water we began to get concerned all over again. The good news, of course, is that the water level peaked and then receded a bit without any additional ice break up. We expect the river level to continue to drop as the accumulation of snow melt flows through and is not replaced. The temperatures have dropped which is preventing additional snow melt (although also slowing ice melt in the river). Looking at the weather forecast, we don't see any conditions which will put us in high risk mode for about a week. Here's what to expect though. Overnight tonight we should be getting 10-20 inches of wet snow. Thankfully this is not rain or we could be in for a big problem. Temperatures will stay in the 20s and 30s until early next week minimizing run off. But...around Wednesday of next week we could be seeing warmer temperatures, possibly even into the 50's which will reactivate the melting. And we'll have 10-20 new inches of snow in the snow pack to melt. And we are very likely to still have the existing jam caused by the Dog River. And we don't know if the upstream ice will remain strong enough to hold together during another rapid rise period. The point is we possibly have a slight respite (although we can't totally relax while a jam exists) but could be facing the very same risk next week. Please continue your plans and preparations. In a couple of detail matters: Since there is a surplus of sandbags remaining in front of City Hall, the National Guard discontinued their sandbagging operation this morning. We deeply appreciate their assistance. They filled and moved 5,665 sandbags. Those sandbags remaining at City Hall are available for use. The city has stockpiled some as well in case more are needed. Again, remember that sandbags work best with plywood and plastic behind them. IN order to eliminate any confusion, the city is discontinuing its noon time testing of the fire siren. We know it works and, when left to run, is audible in most downtown locations. A small amount of people have indicated that these e-mails are reaching them a few hours after they were sent. The city system shows all e-mails being sent in a timely fashion and it seems that the vast majority of the 500 or so recipients are getting them as they go out. If you are having problems it may be with your e-mail provider and you may want to check with them. My thanks to everyone for your cooperation and patience. This has dragged on a long time and won't truly be over until the ice is all gone from the river. The threat is real and remains. The city will continue its mitigation efforts. I also thank the many other agencies, particularly the State of Vermont Emergency Management Agency (VEMA) leadership of Barbara Farr and the public information work of Mark Bosma but also Pat Ross from ANR, Mike Bertrand from Administration as well as Kate White Cold Regions Research and Engineering Lab (CRREL). And many others. These people have been on 4 AM conference calls with us the last two mornings and have been with us all the way. ...back to top
Update from City Manager -
Not Out of the Woods Yet 3:30 P.M., Thursday, March 15, 2007 While the apparent worse period (warm rain) is over and the ice sheets have held firm, we are still in a period of risk. The river continues to rise with projections of more water coming in. Therefore the risk of the ice sheets breaking up is still present. In addition, an ice jam on the Dog River (which caused some flooding in Berlin today) released and deposited a lot of ice into the Winooski creating a small jam there in the midst of our freeze up area. We are seeing some evidence of water back up as a result of this although nothing serious yet. Earlier this afternoon we thought things were easing up, we can't assume that now. Please remain on alert and watching/listening closely. ...back to top
Vermont Emergency Management Noon Update
12:00 P.M., Thursday, March 15, 2007 Contacts: William Fraser, Montpelier City Manager, (802) 223-9502 Mark Bosma, Vermont Emergency Management (800) 347-0488 -There will be no alarm test in the city of Montpelier at noon today. -There are plenty of sandbags in front of City Hall for residents and businesses that need them. -The latest update on the Winooski River as it runs through Montpelier indicates that the river level is still 6-7 feet below flood stage. The rise in the river has NOT caused any significant ice break up (ice break-up could cause an ice jam which would most likely lead to flooding.) Water appears to be flowing well and there are few areas of concern. However, warm temperatures and rain are expected to continue, so spotters will continue to monitor the river. The rain is not expected to raise the river level to flood state (about 15-feet), but there is still a concern that the rise could break up the ice and cause an ice jam. The situation could change at any time and the flood hazard is at its highest point to date so residents are strongly urged to monitor conditions and tune into radio and TV broadcasts for weather and flood updates. If a flood is imminent Vermont Emergency Management will activate its Emergency Alert System. The siren at the fire station would also ring as a last line of warning. Other Latest Information: -Should a flood occur in Montpelier and shelters be needed, they will be set up by the Red Cross at Vermont College and National Life. Residents are encouraged to continue to be ready for evacuation, should it be needed. Those with special needs are urged to call the Montpelier Fire Department at 229-4913 to make special arrangements for possible evacuation. -The Vermont National Guard will continue to fill sandbags in Montpelier until the end of the week. Residents and businesses are invited to pick up sandbags at Montpelier City Hall as they become available. Again, there are plenty available at this point. -There has been some localized flooding in other parts of the state. Most of these are areas where flooding traditionally occurs. Motorists are advised to drive with caution this morning and as always, are advised NOT to drive through flood waters. ...back to top
Vermont Emergency Management Morning Update
8:30 A.M., Thursday, March 15, 2007 Contacts: William Fraser, Montpelier City Manager, (802) 223-9502 Mark Bosma, Vermont Emergency Management (800) 347-0488 -The latest update we have on the Winooski River as it runs through Montpelier indicates that the river level is still 7-8 feet below flood stage. The rise in the river level did NOT break up the ice overnight, and spotters do not report any cracks that could indicate an imminent problem (ice break-up could cause an ice jam which would most likely lead to flooding.) Water appears to be flowing well and there are few areas of concern. However, warm temperatures and rain are expected to continue throughout this morning, so spotters will continue to monitor the river. The rain is not expected to raise the river level to flood state (about 15-feet), but there is still a concern that the rise could break up the ice and cause an ice jam. The situation could change at any time and the flood hazard is at its highest point to date so residents are strongly urged to monitor conditions and tune into radio and TV broadcasts for weather and flood updates. If a flood is imminent Vermont Emergency Management will activate its Emergency Alert System. The siren at the fire station would also ring as a last line of warning. -Should a flood occur in Montpelier and shelters be needed, they will be set up by the Red Cross at Vermont College and National Life. Residents are encouraged to continue to be ready for evacuation, should it be needed. Those with special needs are urged to call the Montpelier Fire Department at 229-4913 to make special arrangements for possible evacuation. -The Vermont National Guard will continue to fill sandbags in Montpelier until the end of the week. Residents and businesses are invited to pick up sandbags at Montpelier City Hall as they become available. -Flyers have been printed featuring tips on what to do before, during, and after a flood and evacuation maps. Those flyers are available at Montpelier City Hall in the City Managers and City Clerks offices as well as at the Montpelier Police Department dispatch area. Flyer is also available for download on-line at http://www.montpelier-vt.org/flood/monitor_pub.cfm -There has been some localized flooding in other parts of the state. Most of these are areas where flooding traditionally occurs. Motorists are advised to drive with caution this morning and as always, are advised NOT to drive through flood waters. ...back to top
Update from Montpelier City Manager
5:00 A.M., Thursday, March 15, 2007 Its 5:00 AM as I type this. City and State officials have been doing ice inspections since 3:00 AM and held a conference call at 4:00 AM, more inspections are happening now and we all will talk again at 5:15 AM The good news at this time is that the sheet ice on the river (upstream of the freeze up jam or channel obstruction) has not begun to break up and is not yet showing the type of cracking that indicates that break up is imminent. The bad news is that the rain is steady and predicted to continue to midday and the river level has been steadily rising. We are not concerned that this river rise will come anywhere close to flood level. We are, however, very concerned that the rapid river rise will cause break up of the sheet ice and send it into the jammed up area. If, however, the sheet ice holds we are going into a colder weather pattern which will slow or stop melt and we should be in good shape. Unfortunately we will not have really good information until our next two hourly river gauge readings and until we can see the ice formations better. THE NEXT FEW HOURS ARE GOING TO BE THE HIGHEST RISK TIME PERIOD this week. Please stay on alert and be listening to local radio stations etc. I will try to provide you up dates as often as practical. The Police Chief, Fire Chief, state river people, State Emergency Management people, Cold Regions Research and Engineering Lab staff, your police and fire personnel and I are all communicating regularly about this - most of us are up and out here in Montpelier looking at the situation first hand. I'll let you know more as I know more. Bill Fraser ...back to top
Vermont Emergency Management Daily Update
Wednesday, March 14, 2007 Contacts: William Fraser, Montpelier City Manager, (802) 223-9502 Mark Bosma, Vermont Emergency Management (800) 347-0488 -National Weather Service reports the Montpelier area is likely to see steady rain overnight tonight with temperatures above freezing. The US Geological Survey estimates these conditions will cause a 3-4 foot rise on the Winooski River as it runs through Montpelier. This is expected to raise the river level to 7-8 feet, which is well below the flood stage of 15 feet. However, the rise may be enough to break up significant sections of ice which could cause ice jams and lead to flooding. State and City officials will monitor conditions throughout the night and issue alerts should they be necessary. Residents are advised to closely monitor conditions and tune into radio and TV broadcasts for weather and flood updates. -Should a flood occur and shelters are needed, they will be set up by the Red Cross at Vermont College and National Life. Residents are encouraged to continue to be ready for evacuation, should it be needed. Those with special needs are urged to call the Montpelier Fire Department at 229-4913 to make special arrangements for possible evacuation. -The combination of wastewater and fire hydrant water continues to degrade the ice, creating apparent channels. Engineers will do measurements of the ice and channels on Thursday. -The Vermont National Guard will continue to fill sandbags in Montpelier until the end of the week. Residents and businesses are invited to pick up sandbags at Montpelier City Hall as they become available Sandbags should be used along with plywood and plastic to be most effective. We are fortunate to have this assistance from the National Guard. Be sure to maximize the benefit of sandbags that you use by placing plywood and plastic behind them. -The Montpelier Fire Department will continue testing its warning siren each day at noon. The tests will be between 10-15 seconds in duration. Residents are advised that the sirens are the "last line" of the warning system and are urged to regularly monitor radio and TV as well as weather radios for updates on river conditions. -Flyers have been printed featuring tips on what to do before, during, and after a flood and evacuation maps. Those flyers are available at Montpelier City Hall in the City Managers and City Clerks offices as well as at the Montpelier Police Department dispatch area. Flyer is also available for download on-line at http://www.montpelier-vt.org/flood/monitor_pub.cfm. ...back to top
National Weather Service Releases
Flood Watch for Most of Vermont Wednesday, March 14, 2007 Below is the text from the recently released NWS flood watch. We have seen an increase in the rate of rise and level of water but it seems to have peaked about 8:00 am. We will monitor the rivers more closely until this warning is resolved. HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 451 AM EDT WED MAR 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK...CENTRAL VERMONT...NORTHEAST VERMONT...NORTHWEST VERMONT AND SOUTHERN VERMONT. .DAY ONE...TODAY AND TONIGHT WARM TEMPERATURES IN THE UPPER 40S TO THE LOWER 50S TODAY ACROSS THE NORTH COUNTRY... WILL CONTINUE TO MELT THE AREA SNOW PACK... AS WELL AS LOOSENING UP RIVER ICE ON AREA RIVERS. A FRONT WILL MOVE SOUTH ACROSS THE REGION AS WELL TODAY... BRINGING THE CHANCE FOR LIGHT RAIN... WHICH WILL ALSO ADD TO SNOW MELT AND LOOSENING UP RIVER ICE. AS A RESULT... THIS WILL CONTINUE WITH THE POTENTIAL FOR ICE JAMS ON AREA RIVERS... INCLUDING ALONG THE WINOOSKI RIVER IN THE MONTPELIER AREA WHERE AN EXISTING FREEZE UP JAM EXISTS JUST DOWNSTREAM OF THE AREA. THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THESE TEMPERATURE TRENDS FOR POSSIBLE START OF RIVER ICE BREAKUP AND ANY ASSOCIATED FLOODING CONCERNS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY TEMPERATURES IN THE 40S ACROSS THE REGION ON THURSDAY WILL CONTINUE CONDITIONS MENTIONED IN ABOVE SECTION. THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THESE SITUATIONS. COLDER AIR WILL WORK INTO THE NORTH COUNTRY LATE THURSDAY AND FRIDAY. A SYSTEM LATE FRIDAY COULD BRING MIXED WINTRY PRECIPITATION TO THE AREA...SETTING THE AREA UP FOR POTENTIAL HAZARDOUS WINTER DRIVING CONDITIONS. http://www.erh.noaa.gov/showsigwx.php?warnzone=VTZ008&warncounty=VTC023&local_place1=Montpelier&product1=Flood+Watch ...back to top
Vermont Emergency Management Daily Update
Tuesday, March 13, 2007 Contacts: William Fraser, Montpelier City Manager, (802) 223-9502 Mark Bosma, Vermont Emergency Management (800) 347-0488 -National Weather Service reports the Montpelier area is likely to see rain overnight starting on Wednesday. The rain is expected to be accompanied by temperatures in the 40s. This weather does NOT pose an immediate threat of flooding, however, residents are advised to closely monitor conditions and tune into radio and TV broadcasts for weather and flood updates. -The City of Montpelier reports progress in its efforts to melt the river ice with treated wastewater. An approximately 5-foot wide by 300-foot long break can be seen in the path of the water. -The Vermont National Guard will continue to fill sandbags in Montpelier on Wednesday and throughout the week. Residents and businesses are invited to pick up sandbags at Montpelier City Hall as they become available. -The Montpelier Fire Department will continue testing its warning siren on Wednesday at noon. The test will increase from 5 seconds to 15 seconds. Residents are advised that the sirens are the "last line" of the warning system and are urged to regularly monitor radio and TV as well as weather radios for updates on river conditions. -The Montpelier Fire Department will also be conducting a full scale drill at the fire station on Wednesday to test its preparedness. *This will only be a test and should not be cause for alarm*. -An informational program featuring basic information about how to prepare for the flood and what is happening has been produced and will be airing on Comcast Channel 15 in Montpelier. For broadcast times, go to http://www.dps.state.gov/vem -Flyers have been printed featuring tips on what to do before, during, and after a flood and evacuation maps. Those flyers are available at Montpelier City Hall in the City Managers and City Clerks offices as well as at the Montpelier Police Department dispatch area. Flyer is also available for download on-line at http://www.montpelier-vt.org/flood/monitor_pub.cfm. -Officials with the city of Montpelier continue to have daily contact with the office of the Governor, Vermont Emergency Management, Vermont State Police, Department of Public Safety, Cold Regions Research and Engineering Laboratory, the Corps of Engineers, the National Weather Service, USGS, the Vermont National Guard, the Vermont Agency of Transportation, and the Vermont Agency of Natural Resources. ...back to top
Siren Follow-up
The Fire Department siren operated successfully at noon today.
Tuesday, March 13, 2007 We received several reports that it was not audible in all parts of the city. We will test it again tomorrow and let it run longer (which also allows it to wind up to a louder volume). This is one of our main concerns about the siren as a warning device however - not everyone can hear it. Please remember that the siren will only be used as the final warning when the river is actually flooding. Please follow news reports on local radio and in local newspapers. We will make every attempt to keep people informed through this list serve, the city's website and the news media. When/if a flood event approaches it will be preceded by weather reports and indications of high risk from the city - probably a day or two in advance. There may well be a flood watch or warning announced by the National Weather Service. A flooding event most likely will involve heavy rain so pay attention to that. If there is significant movement on the river and within the ice, the city's automatic alarms will go off. Once it is verified that flooding may be imminent, we will notify radio and TV stations and activate the emergency broadcast system. This may proved one to two hours notice before actual flooding begins. Finally, as the last warning we will sound the siren. Please do not wait for this siren to take actions or rely on the siren for a sole warning. ...back to top
City to Test Emergency Siren at Noon
Tuesday, March 13, 2007 The City of Montpelier is scheduled to test their emergency siren at noon today. Also, they anticipate they may do additional tests on future days at noon. Do not be "alarmed" - this is only a test. ...back to top
Montpelier Ice Jam Monitoring Workshop
Introduction to Ice Jams Tuesday, March 13, 2007 On Saturday, March 10, Kate White of CRREL gave a Powerpoint presentation to the Montpelier Police Department staff. Here is a copy of the presentation, in PDF format, to help educate citizens of Montpelier on what is happening with the potential flood situation.
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Update from City Manager
Monday, March 12, 2007 Sandbags: Many thanks to Suzanne Hechmer and the Montpelier Downtown Community Association for organizing the sandbag filling operation this weekend. Many thanks also to all the volunteers who participated. We appreciate your help and your concern for the community. This morning the city learned that the National Guard will be bringing a sandbag filling machine and providing personnel over the next few days. In addition to the 7,000 sandbags the city has left, the Guard will be bringing about 5,000 more. These will be used for state buildings as well as being made available to the general public. We don’t have details yet about distribution points but will post that information as soon as possible. People should understand that Sandbags are most effective when plywood and plastic are placed behind them. Because bags are stacked water can get through the cracks. Sandbags will slow the water’s entry and are very good for preventing broken windows caused by the weight of water pressure against them. Weather: The current weather pattern is very positive for us. The most favorable conditions are a slow melt because that weakens the ice build up in the area where the river restriction exists. It also weakens and reduces the size of potential ice blocks. The least favorable conditions are a major rainstorm accompanied by very warm weather. This will rapidly increase river flow and break the sheet ice above the restricted area into large blocks that have not had time to weaken. These have the highest likelihood of jamming up the restricted river channel. Right now we anticipate some rain and warm weather on Wednesday/Thursday followed by cooler temperatures and freezing rain/snow over the weekend. Based on current predictions we don’t anticipate the amount of rain to pose an imminent threat. William Fraser City Manager ...back to top
Vermont Emergency Management (VEM) Daily Update
March 12, 2007 The National Weather Service reports the Montpelier area could see rain overnight Wednesday into Thursday. One-half to three-quarters of an inch of rain is possible during that period before the precipitation turns to freezing rain and/or sleet. This is NOT expected to lead to flooding as there is still sufficient snow pack on the ground to absorb the precipitation. However, residents are still asked to closely monitor conditions and tune into radio and TV broadcasts for updates. The Vermont National Guard will be filling sandbags in Montpelier on Tuesday (Governor's Office will issue a release on this). The Montpelier Fire Department will begin tests of its alert sirens starting on Tuesday. The tests will be 2-5 seconds long. The first test will be 4 cycles of 2-3 minutes. The Montpelier Fire Department will also be conducting a full scale drill at the fire station on Wednesday to test its preparedness. An informational program featuring basic information about how to prepare for the flood and what is happening has been produced and will be airing on Comcast Channel 15 in Montpelier. Flyers have been printed featuring tips on what to do before, during, and after a flood and evacuation maps. Those flyers are available at Montpelier City Hall in the City Managers and City Clerks offices as well as at the Montpelier Police Department dispatch area. Flyer is also available for download on-line at http://www.montpelier-vt.org/flood/MontpelierEvacuationRtes.pdf. Officials with the city of Montpelier continue to have daily contact with the office of the Governor, Vermont Emergency Management, Vermont State Police, Department of Public Safety, Cold Regions Research and Engineering Laboratory, the Corps of Engineers, the National Weather Service, USGS, the Vermont National Guard, the Vermont Agency of Transportation, and the Vermont Agency of Natural Resources. Mark Bosma Public Information Officer Vermont Emergency Management ...back to top
Montpelier Emergency Management Update to be aired on ORCA Channel 15
March 12, 2007 Mark Bosma, of Vermont Emergency Management interviews Montpelier Police Chief Doug Hoyt about current flood prevention operations under way in Montpelier, and what residents and downtown workers should do before and during a flood. It runs 17 minutes, and was recorded on Monday, March 12. AIR TIMES – ORCA CHANNEL 15 (COMCAST VIEWERS ONLY) Mon 3/12 12:00p, 3:30p, 11:30p Tue 3/13 1:00a, 3:00a, 5:00a, 7:00a, 11:30p Wed 3/14 1:00a, 3:00a, 5:00a, 7:00a, 11:00a, 4:00p Thu 3/15 1:00a, 3:00a, 5:00a, 7:00a, 11:00a, 5:00p, Fri 3/16 12:00a, 1:00a, 3:00a, 5:00a, 7:00a, 11:30a, 6:00p, 6:30p Sat 3/17 1:00a, 3:00a, 5:00a, 7:00a, 4:00p, 8:30p Sun 3/18 1:00a, 3:00a, 5:00a, 7:00a, 2:30p, 10:00p Mon 3/19 1:00a, 3:00a, 5:00a, 7:00a ORCA will stop running this program if we are told by emergency management officials that the danger of flooding has passed. Beginning Tuesday, March 13 the program will run 1:00a, 3:00a, 5:00a, 7:00a every day until the danger of flooding has passed. For those who want a lo-resolution copy, a downloadable movie file of the broadcast is available at the link below:
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Additional Flood Monitoring Links From NOAA
March 12, 2007 Here are some links to a NOAA center that does some great work with snowpack information. The links show computer simulations of the current snow cover across the region. They give viewers a good idea of how much snow there is, how much liquid water is in the snow, and how "ripe" (or ready to melt) the snowpack is. As with all computer "models", its not exact. Use with caution. But it does help to give us some guidance on the state of the snow. Snowpack Water Equivalent - the amount of liquid water held in the snow. Snowpack Density - The density is the ratio of liquid water to snow depth. A new snowfall may have a density of 10 to 20 percent. A ripe snowpack will have a density of 50% or greater. Snow Pack Temperature. Compare snow density and snow pack temp. A ripe snowpack warmed to 32 is a melting snowpack. ...back to top
Flood Message from Mayor Hooper
March 8, 2007 Dear Friends: The City is facing an unprecedented challenge with the Winooski River this year. The ice jam that formed in January is different from any we have experienced before. We are doing everything we can to prevent a flood, but due to the nature of the ‘freeze-up’ ice jam, many of the methods we have used in the past for breaking ice jams simply do not work. If you would like information on what has been done to prevent a flood, please visit the flood monitoring page our web site: http://www.montpelier-vt.org/flood/monitor_pub.cfm Despite the considerable expertise of federal officials and strong support of state officials it is impossible to know if there will be flooding or where or when it could occur. If there is a flood it will be in low areas in and around the downtown. It could be the same areas that were flooded in 1992, or it could be in adjacent areas; it could be upstream or down stream from these areas. If there is a flood it could happen quickly - water could rise to cover the downtown in less than an hour. As a result we are asking everyone in the Montpelier community to be thoughtful and prepared so they can protect themselves and help their neighbors. Notices are being sent to school families about plans for the schools. We are working with the Red Cross to provide shelters for people who can not reach their homes or who are forced out of their homes. Depending on the need, shelters will be at Vermont College, National Life and/or the High School. Employers are being urged to put contingency plans for protecting their employees and protecting their businesses in place. People unfamiliar with the area should familiarize themselves with routes outside of town which do not go through the downtown or across the rivers in low-lying places. Flood notice: During the month of March, we expect there could be flooding if we have weather warmer than 50 degrees during the day and above freezing weather at night which causes the snow to melt rapidly and/or if we have heavy rain for more than several hours. If this sort of weather is predicted, please start monitoring weather reports and the news media. The city will attempt to alert the public using the following methods.
Flood preparation for you and your family:
Sincerely, Mary Hooper, Mayor ...back to top
Flood Update from Police Chief Doug Hoyt
March 7, 2007 Thanks to all of you for being a part of the communication system that the City is putting together for flood information. Not in any particular order, here are some of the latest events and information.
Douglas S. Hoyt Chief of Police Montpelier Police Department 1 Pitkin Court Montpelier, VT 05602 802-223-3445 ...back to top
Real-Time Data from Winooski River Monitoring Stations in Montpelier added March 6, 2007 The charts below represent an effort to provide advance notice of changing river conditions to provide Montpelier Officials with up-to-date information on the Winooski River. They are not intended to be a definitive predictor of imminent flooding, as there are multiple factors in flood conditions and warnings. There are two gauges – one near the Two Rivers Farm and the other near the Carr Parking Lot. The devices are contacted every hour via cell phone to obtain the information. They are also set to notify a select group of officials when the water raises a set amount in a 24-hour period and/or when the water reaches a set height specific for each location. This information is also being shared with the National Weather Service to assist them in making warnings and watches for flooding in the Montpelier and Winooski watershed area. Two-Rivers Farm Data
Carr Parking Lot Data NOTE: If you are having trouble viewing the Data tables, visit the CRREL webcam site at the following link: For more information about these charts, please contact Dr. Kate White at Kathleen.D.White@erdc.usace.army.mil ...back to top
Flood Preparation Update
February 28, 2007 William Fraser, City Manager Since last week’s council meeting: • Ice monitoring devices have been installed on the river. Readings are being received in live time and are posted on the web in two hour increments. Access is currently restricted to certain officials to prevent potential hacking. We are setting up a “mirror” web site so that these readings can be viewed by anyone at any time. • A meeting was held yesterday morning with many involved agencies including the Cold Regions Research and Engineering Laboratory (CRREL), the Army Corps of Engineers, Vermont Emergency Management, FEMA, Department of Buildings and General Services, Agency of Natural Resources River Management Division, Red Cross, Town of Berlin, National Weather Service, Washington County Sheriff, State Police, Governor’s office and City of Montpelier Police, Fire and Public Works. This meeting was to review the current status, talk about present and anticipated weather conditions, and review, again, possible mitigation/prevention activities. • The National Weather Service is forecasting at least two more weeks of colder temperatures which will not lead to rapid thaw and ice break up. This allows some time for other techniques to work. We are concerned about the impact of a possible 6 to12 inch snow storm later this week, not only on the water load but also on the DPW crew and equipment capacity. • As a result of that meeting, the City is beginning the following operations:
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Freeze-up Ice Jam Situation in Montpelier
The City of Montpelier and the Vermont Emergency Management Agency, assisted by the Cold Regions Research and Engineering Laboratory (CRREL), the New York District of the Corps of Engineers (NAN), the National Weather Service and the Vermont Agency of Natural Resources are closely monitoring ice and weather conditions to assess the potential for breakup ice jamming later in the winter. The City and State are undertaking a full range of mitigation, early detection and prevention actions to the extent possible. Due to the potential seriousness of potential flooding, however, they are also issuing a public caution to Montpelier residents, businesses and property owners. February 9, 2007 William Fraser, City Manager The City and State are installing pressure monitoring devices into the ice to continually trace its condition and movement. Police and Fire employees are performing regular visual inspections of river conditions and levels. The Department of Public Works is preparing to use a crane and excavator to maintain an open river channel to attempt to avoid water and ice build up. Other potential immediate actions are being evaluated for effectiveness. The City is also actively pursuing FEMA funding for installation of permanent vanes in the riverbed which will work to reduce jamming situations in the future. Although a freeze up ice jam presently exists, there is no immediate threat today or this week. Weather conditions in the next few weeks, though, could create a much higher risk of flooding. At this time there is no reliable indication of long term weather patterns and how they will impact the river. People are urged to take immediate steps to protect their properties and valuables and minimize losses.
In a normal winter with more average river discharge, sheet ice covers typically form upstream of the Main St. Weir and the Pioneer Dams. These upstream ice covers intercept drifting frazil ice, reducing the frazil ice volume available to form a freezeup ice jam below the city. Under normal circumstances, a sheet ice cover forms in the Cemetery Bend reach, rather than the freezeup ice jam that now exists there. The freezeup ice jam poses a hazard since it could better resist passage of the breakup ice run later in the winter, increasing the potential for ice jam flooding at Montpelier. Occurrence of a breakup ice jam later this winter depends on several factors. First continued cold is needed to form a thick ice cover upstream of the city to supply ice to the breakup jam. Second is the nature of the ice breakup period: A best case scenario would be several weeks of sunny days in late-February and early-March to gradually melt the ice covers upstream and downstream of Montpelier. At the other extreme four more weeks of cold weather followed by rapid thaw and rain could release the upstream ice suddenly resulting in an ice jam at Montpelier. The City and State will continue to issue information as it becomes available. Flood Links
Updated January 8, 2008 |
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