Good grief. Why can't you guys look at the comparison other than black/white?
Geesh.
Geesh.
CDUB98 said:
Good grief. Why can't you guys look at the comparison other than black/white?
Geesh.
This one which didn't get built when they had the chance?Mr. AGSPRT04 said:
Can someone link to the old plan to install massive buried storm sewer pipes from west to east of downtown?
Similar estimates have been undertaken. I saw one calculation that adding flood gates to Lake Houston would have mitigated about 2 feet of water at peak flooding. This alone would have essentially constrained all of the flooding to the 100 year plain (and not everybody there flooded during Harvey). Given the 4 feet of rain, this would have been a pretty reasonable outcome.Quote:
Did anyone ever estimate how many acre feet of water were outside of the 100 year floodplain around Lake Houston at the peak of the flooding during Harvey?
Kind of a hybrid solution to buy a little time. Maybe we could market them to tourists - come visit our seasonally empty pit!Quote:
Building flood control reservoirs of significant capacity to dampen rising flood waters.
Lake Conroe began releasing water at 80,000 cfps when the lake level was at approx. 205.8 feet. After they began this, the lake crested a few hours later at approx. 206.2 feet. They are authorized to maintain that level, or up to 207 ft, before compulsory release. Rapid water rise happened in Kingwood approx 24 hours later, exactly when it would be expected.CDUB98 said:
Dear god, not 94chem and his Lake Conroe shtick again. You've already been proven wrong more than once.
Those are interesting numbers, which certainly make you think about things like equilibrium kinetics and steady state flow.Quote:
Another 2 feet from a controlled release of Lake Conroe would have required another 170000 cfs not flowing into Lake Houston from Lake Conroe. We do have a problem here because Lake Conroe peaked at 79000 cfs.
There is only one city in Japan with more than 6 million people.94chem said:
The med center fared MUCH better during Harvey, with twice as much rain, than it did during Allison. We are thankful that MD Anderson survived this time as well as it did.
As for evacuating 6 million people, that's about 3 city blocks in most Japanese cities. If we had as much population density as Japan, we would have moved that many people during Katrina, Rita, Ike, or Harvey.
Greater Houston needs a lot of work.
I know. And Katy, Texas, only has 17,000.Quote:
There is only one city in Japan with more than 6 million people.
Are you suggesting that Japan has multiple entire municipalities that are entirely within...what was your example?...three blocks?94chem said:I know. And Katy, Texas, only has 17,000.Quote:
There is only one city in Japan with more than 6 million people.
Quote:
A. The main two goals of SJRA's gate operations are (i) to protect the spillway gates and the dam's
earthen embankment, and (ii) to ensure that the peak flowrate released from the dam is always LOWER than the peak inflow coming into the lake. In terms of protecting the spillway gates, it is important that water not be allowed to flow over the top of the spillway gates. As the lake level rises, the gates must
be raised so that excess storm flows can be passed under the gates. In terms of peak flowrates, during
the Hurricane Harvey event, the peak flowrate coming into Lake Conroe was approximately 130,000 cfs. The peak release rate going out of the dam was 79,100 cfs. This means that Lake Conroe reduced the amount of flow that would have gone down the river by about 40 percent while keeping the water level in the lake within the six-foot flowage easement.
Move that to the stupid money column.FHKChE07 said:
So first of all, my comment about the proposed 1000 acre reservoir on Spring Creek is that is so small it wouldn't even be a factor. Lake Houston has the storage of 120000 acre ft and it was a blip in the amount of water that was going through it. So unless the reservoir was going to be more than 120 feet deep (newsflash: it wasn't), putting much hope in that reservoir to save the Kingwood is folly.
Secondly, I brought up the Japan flooding as simply a comparison of how well our flood mitigation system works especially for the amount of rain that we got from Harvey. Of course it can be better, but there is stupid money and smart money.
Smart money:
- Building flood control reservoirs of significant capacity to dampen rising flood waters. This would include the White Oak Reservoir possibly, or the Cypress Creek Reservoir. These are going to probably cause some heartache these days because the are likely going to have to condemn some housing for this.
- Building the Ike Dike to protect the city from storm surges to make sure the water flowing downhill has somewhere to go.
Stupid Money:
- Building Massive (and I mean massive) underground tunnels to get water from Addicks and Barker to the ship channel avoiding Buffalo Bayou. This is estimated to be about $6 billion and it would be probably much more to build 8 - 12'x12' tunnels 40+ miles 100 feet underground from Katy to Pasadena.
- Trying to turn Lake Conroe into a flood control reservoirs.
You aren't reading well then.Gap said:
I feel like we have some people here who would defend the New Orleans levee boards who got complacent in their diligence and maintenance. There are certainly areas of Harris County that now flood far more often than they used to when we get a significant rain. No one is asking for or thinks that flooding can be eliminated but I thought there was pretty close to a 100% consensus after all the recent flooding that maintenance needed to be done better and there might be major projects that could make a material difference with the flooding. Additionally, looking at whether all the development to the west was having an impact on flooding which could be helped by another reservoir was on the table. When did taking a look at this and determining what actions to take become something to sneer at?
JJxvi said:Are you suggesting that Japan has multiple entire municipalities that are entirely within...what was your example?...three blocks?94chem said:I know. And Katy, Texas, only has 17,000.Quote:
There is only one city in Japan with more than 6 million people.
FHKChE07 said:
I'll bite. Why do you think that it would be stupid? Projects like this have been shown to work other places like the Netherlands and London.