During a year of some of the worst flooding the United States has ever seen, spanning just about every state except those in severe drought (such as Texas), the US federal government is planning to shut down 376 stream gages due to 'lack of funding' (Thanks to @wunderground on Twitter for this link). Apparently, a USGS stream gage costs around $15,700 a year to maintain, a minimal sum when compared to its benefits. Stream gages allow for accurate flood warnings, that save lives, livestock and property... allow for flood plans to be estimated more accurately... and provide information on water supply during times of drought.
I'm trying not to get into politics too deeply here, since it is a contentious issue and I feel that this is a non-partisan issue and need. But, when I think about other things our government and economy expend money and resources on, and how tiny a speck the cost of a stream gage is in the grand picture, I am disgusted. Are human lives, or our homes and everything in them, or our, businesses, crops, and livestock that are our livelihood... not worth $15,700 a year in each of these watersheds? Are we, the people of the United States, unable or unwilling to demand that our representative government provide cheap and effective services that protect us from loss of life, or is the system so broken that the government is not at all representative of us any more?
There should be many more stream gages being installed, none being removed, and many more rain gages also being added in upper watershed areas.
If our government is unwilling or unable to provide stream and rain gages, I think we need to look into alternatives. Perhaps a citizen-science type network of people could be assembled who are willing to invest a lesser sum in an automated weather station (probably under $500.00 - perhaps with a tax rebate or grant?) or some form of 'cheap and dirty' stream gage. Perhaps state governments or private industry could step in (I know I keep mentioning Google, but I know they could be a part of this). If all else fails, we need a watershed/flood smartphone/computer reporting network (as mentioned before in this blog I am partial to the iNaturalist / whatsinvasive format). Even a normal webcam aimed at a $3 yardstick in the creek would be better than nothing (though it was just pointed out to me that it would be impossible to see at night, when floods are most dangerous!)
The VTResponse people are doing an amazing job and helping organize flood recovery in Vermont. Who is going to step forward to protect us from the next flood? We have great people at the USGS already willing to process the data and inform the authorities of imminent flooding... but they can't do that without having the data in the first place.
Showing posts with label Flood. Show all posts
Showing posts with label Flood. Show all posts
Friday, September 9, 2011
Thursday, September 8, 2011
Hurricane Irene Notebook
During Hurricane Irene I recorded some observations in a notebook, along with a few little sketches. It's not the most detailed journal, and doesn't have all that much art (how do you draw a hurricane?) but I think it's interesting so I am posting it here. The most notable thing I observed, I think, is the fact that in many areas, such as East Middlebury, the storm didn't seem like THAT big of a deal... and I wrote something to that effect, and then minutes later the fire department came to our door and told us we had to evacuate before the river went down Main Street. This has been echoed by others in other areas, and speaks to the fact that flash flooding is dependent on what happens upstream, not just what happens where you are.
Also, I noticed an interesting smell when driving through the start of the storm, and have heard elsewhere that others observed the same thing... did anyone else smell anything interesting or out of place during the approach of the storm?
The journal starts in the Berkshires of Massachusetts, and then moves to East Middlebury, Vermont.




Also, I noticed an interesting smell when driving through the start of the storm, and have heard elsewhere that others observed the same thing... did anyone else smell anything interesting or out of place during the approach of the storm?
The journal starts in the Berkshires of Massachusetts, and then moves to East Middlebury, Vermont.




Wednesday, August 31, 2011
Preparing for or Preventing the Next Vermont Flood
Irene has come and gone from Vermont, but we are going to be dealing with her effects for a long time. Homes and businesses are destroyed, roads and bridges washed out, and people displaced and understandably concerned.
Irene was an 'almost-worst-case-scenario' for Vermont, and hopefully we won't see anything like it again in our lifetimes. However, floods are a part of Vermont life and we will certainly face other damaging floods in the years to come. While we can't completely stop them, there are things we can do to decrease their intensity and increase our preparedness when they do occur.
In some ways, reducing flooding in Vermont is harder than in many areas. Unlike Pittsburgh, with highly urbanized, modified watersheds, or California, with its channelized streams and massive habitat loss, Vermont is a mainly rural state with vast, healthy forests and small towns. Still, there is much we can do to reduce risk and impact of floods.
This post includes some ideas I have about how to reduce flooding risk, prepare for floods, and better cope when they do occur. If you think these ideas make sense, please share this with others. If you think they don't make sense, leave a comment and tell me why. The most important thing right now, aside from cleanup and repairs, is looking ahead together as a state to make sure nothing like this happens again.
Below are my ideas, in somewhat random order:
Irene was an 'almost-worst-case-scenario' for Vermont, and hopefully we won't see anything like it again in our lifetimes. However, floods are a part of Vermont life and we will certainly face other damaging floods in the years to come. While we can't completely stop them, there are things we can do to decrease their intensity and increase our preparedness when they do occur.
In some ways, reducing flooding in Vermont is harder than in many areas. Unlike Pittsburgh, with highly urbanized, modified watersheds, or California, with its channelized streams and massive habitat loss, Vermont is a mainly rural state with vast, healthy forests and small towns. Still, there is much we can do to reduce risk and impact of floods.
This post includes some ideas I have about how to reduce flooding risk, prepare for floods, and better cope when they do occur. If you think these ideas make sense, please share this with others. If you think they don't make sense, leave a comment and tell me why. The most important thing right now, aside from cleanup and repairs, is looking ahead together as a state to make sure nothing like this happens again.
Below are my ideas, in somewhat random order:
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Monday, August 29, 2011
East Middlebury Irene Flood Update Part 1
After spending the night at a friend's house we returned to East Middlebury early this morning. Here's what we found:

Otter Creek leaving Middlebury... high but not dangerous. The crest hasn't arrived here yet, though. The sky looks nasty, but the clouds were clearing.

Sunrise.
East Main Street was not destroyed, or buried in mud. It was obvious that the river had run down the road, though. There was some debris:


Hard to see above, but there is a high water line near the sidewalk.

Goodrow Lumber was spared, except for some very minor parking area damage. Mac's Market across the street was also spared and was open. They told me they had to open a bit late, but everything was fine. Nearby, many people were pumping out their basements. Our home was undamaged, as it is a couple of feet above the road. Our garden was not damaged by flooding, but was damaged by the groundhog again. I was hoping it had drowned, but apparently not.
The river is raging, and is almost unrecognizable. Trees had been uprooted and existing logs have washed away. A 20' tall, 50' long section of vertical bank was created.

Here's what it looked like a few weeks ago, when the water was low:

Note that the young trees to the left were almost completely destroyed (there is a reason they were young... they are on a gravel bar. That area floods often). The leaning sycamore to the right somehow survived the flood.
The flood plain along the river had been buried in mud and debris.


Unlike human structures, floodplain forest is well adapted to frequent floods. This deposit of silt and sand will provide nutrients for the plants, and will benefit the flood-adapted plants in this area such as sycamore, cottonwood, and ostrich fern.
Later today I will check out the gorge and the bridges, and find where the river jumped its banks and flowed down the road. Unfortunately, homes in that area probably sustained more damage.
Also, if you want to see me as a soggy flood refugee, I was interviewed in Channel 3 news yesterday evening.

Otter Creek leaving Middlebury... high but not dangerous. The crest hasn't arrived here yet, though. The sky looks nasty, but the clouds were clearing.

Sunrise.
East Main Street was not destroyed, or buried in mud. It was obvious that the river had run down the road, though. There was some debris:


Hard to see above, but there is a high water line near the sidewalk.

Goodrow Lumber was spared, except for some very minor parking area damage. Mac's Market across the street was also spared and was open. They told me they had to open a bit late, but everything was fine. Nearby, many people were pumping out their basements. Our home was undamaged, as it is a couple of feet above the road. Our garden was not damaged by flooding, but was damaged by the groundhog again. I was hoping it had drowned, but apparently not.
The river is raging, and is almost unrecognizable. Trees had been uprooted and existing logs have washed away. A 20' tall, 50' long section of vertical bank was created.

Here's what it looked like a few weeks ago, when the water was low:

Note that the young trees to the left were almost completely destroyed (there is a reason they were young... they are on a gravel bar. That area floods often). The leaning sycamore to the right somehow survived the flood.
The flood plain along the river had been buried in mud and debris.


Unlike human structures, floodplain forest is well adapted to frequent floods. This deposit of silt and sand will provide nutrients for the plants, and will benefit the flood-adapted plants in this area such as sycamore, cottonwood, and ostrich fern.
Later today I will check out the gorge and the bridges, and find where the river jumped its banks and flowed down the road. Unfortunately, homes in that area probably sustained more damage.
Also, if you want to see me as a soggy flood refugee, I was interviewed in Channel 3 news yesterday evening.
Sunday, August 28, 2011
Evacuated.
Vermont has been devastated by Irene's flooding. It ended up even worse than I thought it was.
We were evacuated from our home at 4:30 pm today. Soon after we left the river started flowing down the main street of our village. We are safe as are our friends and loved ones. We are staying with friends now. Hopefully we can go home tomorrow and hopefully our home is ok. We don't think the floodwaters got inside... But we don't know. It seems that the river jumped into an old channel that main street was built on.
There will be plenty more to post about this tomorrow, but as I am on my phone I can't say much more. I will say this flood will change our relationships with our Vermont rivers as dramatically as the floods in the 1920s... And hopefully in different ways. And hopefully our decisions back then don't end up making the flooding in Montpelier even worse than otherwise.
Sleep well, Vermont... Tomorrow is a day to start diging out.
We were evacuated from our home at 4:30 pm today. Soon after we left the river started flowing down the main street of our village. We are safe as are our friends and loved ones. We are staying with friends now. Hopefully we can go home tomorrow and hopefully our home is ok. We don't think the floodwaters got inside... But we don't know. It seems that the river jumped into an old channel that main street was built on.
There will be plenty more to post about this tomorrow, but as I am on my phone I can't say much more. I will say this flood will change our relationships with our Vermont rivers as dramatically as the floods in the 1920s... And hopefully in different ways. And hopefully our decisions back then don't end up making the flooding in Montpelier even worse than otherwise.
Sleep well, Vermont... Tomorrow is a day to start diging out.
Friday, August 26, 2011
Friday Vermont Hurricane Irene Update
I've been watching Hurricane Irene closely, as have many people in the New England area. There is, as always, a lot of uncertainty in the track of the storm. There was some good news today in that the storm is not as strong as it could have been. However, I'm worried about the possible impacts of the rain on Vermont, though. In that same Jeff Masters post I noticed one total rainfall forecast:

So, that particular map seems to indicate that there could be 7 inches of rain in most of the Vermont side of the Champlain Valley, and at least as much in the southern Green Mountains. Most of that would be Sunday afternoon through Monday morning. The NWS is calling for 3 to 5 inches of rain in the Champlain Valley and up to 7 inches in the mountains. This is less than the scenario above, but still enough to cause flooding. My guess is we will see some roads washed out and flooding in some areas near rivers.
One important thing to note about that map, though, is just how narrow that predicted area of heavy rain is. There's a good chance any one spot will miss out. I don't want to wish that 7 inches of rain on New Hampshire or the Adirondacks, but I really hope it doesn't hit Vermont. I love big storms... but this is excessive.
(One interesting thought I just had was that if winter storms this intense formed in Vermont, this would be 6 or 7 FEET of snow out of one storm. Luckily, winter storms generally don't hold as much moisture and energy as hurricanes)
At this point it appears that the 'best case' scenario of the storm being pushed out to see is very, very unlikely.
I don't want to cause people to panic, and as long as you live on high ground, you will be quite safe. Just stay away from the rivers for a while, and most importantly, DO NOT DRIVE INTO FLOODWATERS. Sometimes it looks like the water flowing over a bridge is just a few inches deep... but in reality, the bridge is 100 yards downstream rather than still attached to the road.

So, that particular map seems to indicate that there could be 7 inches of rain in most of the Vermont side of the Champlain Valley, and at least as much in the southern Green Mountains. Most of that would be Sunday afternoon through Monday morning. The NWS is calling for 3 to 5 inches of rain in the Champlain Valley and up to 7 inches in the mountains. This is less than the scenario above, but still enough to cause flooding. My guess is we will see some roads washed out and flooding in some areas near rivers.
One important thing to note about that map, though, is just how narrow that predicted area of heavy rain is. There's a good chance any one spot will miss out. I don't want to wish that 7 inches of rain on New Hampshire or the Adirondacks, but I really hope it doesn't hit Vermont. I love big storms... but this is excessive.
(One interesting thought I just had was that if winter storms this intense formed in Vermont, this would be 6 or 7 FEET of snow out of one storm. Luckily, winter storms generally don't hold as much moisture and energy as hurricanes)
At this point it appears that the 'best case' scenario of the storm being pushed out to see is very, very unlikely.
I don't want to cause people to panic, and as long as you live on high ground, you will be quite safe. Just stay away from the rivers for a while, and most importantly, DO NOT DRIVE INTO FLOODWATERS. Sometimes it looks like the water flowing over a bridge is just a few inches deep... but in reality, the bridge is 100 yards downstream rather than still attached to the road.
Labels:
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Thursday, August 25, 2011
Quick Vermont Hurricane Irene Update
There's a lot of info on Hurricane Irene already out there but I thought a quick update on its effects on Vermont was appropriate.
There was a great update by Matt Suskoski on the Weather Rapport blog. This blog, at blogs.burlingtonfreepress.com/weather/, is a good place to get updates, as is the official NWS site at http://www.erh.noaa.gov/btv/ .
The storm has shifted west and slowed down a bit. This is a bit of good news for me personally, because I'm planning a trip to Western Massachusetts on Friday and it looks like by leaving early Sunday morning we'll avoid most of the storm. The bad news is it will follow us back to Vermont. And, since it is moving slower than expected, it may also stay in Vermont longer than expected. Right now, some computer models predict that the Irene will pass over Vermont still at tropical storm strength... and very wet. Most areas of Vermont would get at least 5 inches of rain if this model were correct! Of course, hurricanes are very hard to forecast, and it could still miss the state entirely. It's worth noting though that Otter Creek in Middlebury was noticeably higher than its normal summer level today, and that heavy rain may happen today with thunderstorms not associated with the hurricane... so the worst case scenario is a pretty nasty one that could leave us with significantly worse flooding than this year's nasty spring thaw or May thunderstorms.

Above: A model prediction of 4 to 8 inches of rain in Vermont from Irene. These models sometimes miss the local effects of mountains so it's not impossible that areas of the Green Mountains would get over 10 inches of rain if this model were correct. Yikes!
We're far from the river and in a very solid old building so I doubt we'll have flooding in our home, but there's a good chance that many bridges will be washed out, roads will be covered in mud, power will be out, and no one will be going anywhere for a few days. Luckily we've got a lot of food stored here. You should too. Make sure you have plenty of food, water, batteries, and other emergency supplies available, because you may need them! I'll try to post updates but for emergency info, you are better off checking the National Weather Service site above and listening to your local authorities. If you are in an area that flooded already this year (except lake flooding) or has flooded in the past you may consider staying at a friend's house Sunday night.
Update Thursday afternoon: Still definitely looks like Irene could have a big impact on Vermont. One recent computer model I looked held the brunt of the storm back until late Sunday night or Monday morning. There's also the chance it will miss us completely. We'll see!
There was a great update by Matt Suskoski on the Weather Rapport blog. This blog, at blogs.burlingtonfreepress.com/weather/, is a good place to get updates, as is the official NWS site at http://www.erh.noaa.gov/btv/ .
The storm has shifted west and slowed down a bit. This is a bit of good news for me personally, because I'm planning a trip to Western Massachusetts on Friday and it looks like by leaving early Sunday morning we'll avoid most of the storm. The bad news is it will follow us back to Vermont. And, since it is moving slower than expected, it may also stay in Vermont longer than expected. Right now, some computer models predict that the Irene will pass over Vermont still at tropical storm strength... and very wet. Most areas of Vermont would get at least 5 inches of rain if this model were correct! Of course, hurricanes are very hard to forecast, and it could still miss the state entirely. It's worth noting though that Otter Creek in Middlebury was noticeably higher than its normal summer level today, and that heavy rain may happen today with thunderstorms not associated with the hurricane... so the worst case scenario is a pretty nasty one that could leave us with significantly worse flooding than this year's nasty spring thaw or May thunderstorms.

Above: A model prediction of 4 to 8 inches of rain in Vermont from Irene. These models sometimes miss the local effects of mountains so it's not impossible that areas of the Green Mountains would get over 10 inches of rain if this model were correct. Yikes!
We're far from the river and in a very solid old building so I doubt we'll have flooding in our home, but there's a good chance that many bridges will be washed out, roads will be covered in mud, power will be out, and no one will be going anywhere for a few days. Luckily we've got a lot of food stored here. You should too. Make sure you have plenty of food, water, batteries, and other emergency supplies available, because you may need them! I'll try to post updates but for emergency info, you are better off checking the National Weather Service site above and listening to your local authorities. If you are in an area that flooded already this year (except lake flooding) or has flooded in the past you may consider staying at a friend's house Sunday night.
Update Thursday afternoon: Still definitely looks like Irene could have a big impact on Vermont. One recent computer model I looked held the brunt of the storm back until late Sunday night or Monday morning. There's also the chance it will miss us completely. We'll see!
Monday, August 22, 2011
Flash Flood Tragedy in Pittsburgh - Let's Keep it from Happening Again
Pittsburgh was faced with a tragedy last week when extreme downpours caused a flash flood that killed four people.
A torrential thunderstorm dumped two inches of rain in an hour, on top of already saturated ground. This caused a massive sewage-stormwater overflow that suddenly swamped Washington Boulevard, leading to the tragedy that claimed these four lives, including two small children.
I found this article about lessons learned from the flood. The point that life is precious and tenuous is a well-made point. But why not look beyond that? Why not look at the causes of this disaster and try to keep it from happening again? Warning systems and closures are on the right track, but may not be enough.
A quick glance at Google Earth shows why Washington Street is prone to flooding:

It's in a hollow, just like Panther Hollow, Junction Hollow, and the many other hollows of Pittsburgh. It's been a hollow since before the city was built. And, under the earth and concrete, in a sewer line, is the buried, modified path of what was once called Negley's Run.

(The above image comes from an 1850 map available online from the Darlington Digital Library, an amazing resource.)
When a waterway is put underground, it is out of sight and often out of mind, but it doesn't stop being a waterway. Negley's run has a rather large watershed, one that still captures massive amounts of water during summer downpours. In fact, runoff is faster now than it was before the city was built. Impervious substrates rush water into the drains, where it is funneled through pipes. Furthermore, without being able to easily see what is happening in the pipes, it is difficult to know if there are blockages in the flow, or to see water quickly rising.
Sewage-stormwater overflows happen often in Pittsburgh, but usually 'only' dump sewage into the rivers. During my project I did learn that overflows like this one do sometimes happen in the Junction Hollow neighborhood, where they fill the basements of unfortunate residents with sewer water. Overflows happen into Nine Mile Run at Frick Park as well.
I don't know if rain gardens, impervious substrates, additional trees, rain barrels, and daylighted streams could have stopped this flood. I do know that these measures have been proven to SLOW the movement of floodwaters (after all, that is what inspired the title of this blog). Water rose FAST during this flood - acting more like a flash flood in the Desert Southwest than a flood typical of Pennsylvania. If we could have slowed this flood down just a few minutes, it might have been enough to prevent these tragic deaths.
Watershed health isn't 'just' an environmental issue. Floods kill people each year, and ruin the homes and businesses of many more. As weather appears to be becoming more extreme, perhaps due to climate change, and as we degrade watersheds more and more, tragedies like this are going to become more and more common if we don't act to offset the damage. No single person's sewer-connected drainspout can be blamed for this tragedy, but if each drainspout in the watershed was disconnected, maybe these deaths could have been avoided.
A torrential thunderstorm dumped two inches of rain in an hour, on top of already saturated ground. This caused a massive sewage-stormwater overflow that suddenly swamped Washington Boulevard, leading to the tragedy that claimed these four lives, including two small children.
I found this article about lessons learned from the flood. The point that life is precious and tenuous is a well-made point. But why not look beyond that? Why not look at the causes of this disaster and try to keep it from happening again? Warning systems and closures are on the right track, but may not be enough.
A quick glance at Google Earth shows why Washington Street is prone to flooding:

It's in a hollow, just like Panther Hollow, Junction Hollow, and the many other hollows of Pittsburgh. It's been a hollow since before the city was built. And, under the earth and concrete, in a sewer line, is the buried, modified path of what was once called Negley's Run.

(The above image comes from an 1850 map available online from the Darlington Digital Library, an amazing resource.)
When a waterway is put underground, it is out of sight and often out of mind, but it doesn't stop being a waterway. Negley's run has a rather large watershed, one that still captures massive amounts of water during summer downpours. In fact, runoff is faster now than it was before the city was built. Impervious substrates rush water into the drains, where it is funneled through pipes. Furthermore, without being able to easily see what is happening in the pipes, it is difficult to know if there are blockages in the flow, or to see water quickly rising.
Sewage-stormwater overflows happen often in Pittsburgh, but usually 'only' dump sewage into the rivers. During my project I did learn that overflows like this one do sometimes happen in the Junction Hollow neighborhood, where they fill the basements of unfortunate residents with sewer water. Overflows happen into Nine Mile Run at Frick Park as well.
I don't know if rain gardens, impervious substrates, additional trees, rain barrels, and daylighted streams could have stopped this flood. I do know that these measures have been proven to SLOW the movement of floodwaters (after all, that is what inspired the title of this blog). Water rose FAST during this flood - acting more like a flash flood in the Desert Southwest than a flood typical of Pennsylvania. If we could have slowed this flood down just a few minutes, it might have been enough to prevent these tragic deaths.
Watershed health isn't 'just' an environmental issue. Floods kill people each year, and ruin the homes and businesses of many more. As weather appears to be becoming more extreme, perhaps due to climate change, and as we degrade watersheds more and more, tragedies like this are going to become more and more common if we don't act to offset the damage. No single person's sewer-connected drainspout can be blamed for this tragedy, but if each drainspout in the watershed was disconnected, maybe these deaths could have been avoided.
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