GrandpaaSmucker wrote: Sun Sep 16, 2018 10:38 pm
GetUrban wrote: Sun Sep 16, 2018 7:21 pm
It was a bit more complicated than that. The run-off in the Missouri basin was estimated to have been 57.7 million acre/ft. in 2011, which was 9 maf more than the previous record of 49 maf in 1997. An acre/foot = 43560 cu/ft So 43,560 x 57,700,000 = 251,341,200,000 cu/ft. Yes, over 257.3 billion cu/ft. of run-off.
Run-off in 2000, 2002, &2004 was less than 17 maf per year, to give you an idea of "normal".
The wildlife management "pulses" were suspended in 2011, so that practice was not a factor that year.
More in-depth info here:
http://www.prairiefirenewspaper.com/201 ... nes-causes
FAKE NEWS from a fake web site
WRONG! The numbers don't lie. Just because the publication has "Progressive" in the name, you don't even bother reading the data they present, even though it's public information that came straight from from USACE and USGS.
The amount of water released for the spring pulses is a drop in the bucket compared to the 16.1 maf storage capacity reserved for flood control . The 16.1 maf flood reserve is maintained/provided regardless of whether the pulses are released for any given year.
March pulse = 2 days at 5000 CFS = 0.1147844 acre ft x 172,000 seconds = 19,742 acre ft. That is only .012% of the 16.1 maf flood storage capacity
May Pulse = 2 days at 20,000 cfs - 0.45913751 acre ft x 172,000 seconds = 78,972 acre ft. That is only .049% of the 16.1 maf flood storage capacity
But they do not even release the pulses if they cannot set aside 16.1 maf for flood storage capacity.
The main reason we had flooding for so long that year was that they couldn't release the water fast enough once the 16.1 maf capacity was reached. And the rain kept coming. You could argue that they should provide more than 16.1 maf flood storage capacity in the system, but you have to consider all of the other things the water is used for. The pulses are really a minor factor in the big picture. The overall system has 73.1 maf capacity, but you can't have all of that capacity available for a 1000 year event. If you did, you wouldn't have any water left for irrigation, hydro electric, recreation, etc.
Correction: The flood storage capacity is actually 16.3 MAF.