Missouri River Basin Water Management

Transcription

1 Missouri River Basin Water Management Spring 2015 Public Meetings April 7 th April 7 th April 8 th April 9 th April 9 th 11:00 a.m. 6:00 p.m. 11:00 a.m. 11:00 a.m. 6:00 p.m. Pierre, SD Bismarck, ND Fort Peck, MT Smithville, MO Council Bluffs, IA US Army Corps of Engineers BUILDING STRONG

2 Missouri River Mainstem Reservoir System Fort Peck Montana Garrison South Dakota Oahe Big Bend North Dakota Wyoming Fort Randall Gavins Point Nebraska Iowa Colorado Kansas Missouri 2

3 Our Mission Regulate Missouri River Mainstem Reservoirs to Support Congressionally Authorized Purposes Water Supply Water Quality Flood Control Hydropower Control Recreation Navigation Fish and Wildlife Including Threatened and Endangered Species Irrigation 3

4 23.5 MAF 23.0 MAF 18.5 MAF 4

5 Missouri River Mainstem System Storage Zones and Allocations Exclusive Flood Control 7% Historic max Annual Flood Control & Multiple Use 16% April 1, 2015 We are here Storage In MAF Carryover Multiple l Use 53% Historic min April 1, MAF April 1, MAF Permanent Pool 24%

6 Current Reservoir Levels Apr 1, 2015 Fort tpeck Garrison Exclusive Flood Control Annual Flood Control & Multiple Use Exclusive Flood Control 2246 Annual Flood Control & Multiple Use Carryover Multiple Use Carryover Multiple Use Permanent Pool 2160 Permanent 1775 Pool feet into Annual Flood Control Zone. 1.9 feet into Annual Flood Control Zone. Oahe Exclusive Flood Control Annual Flood Control & Multiple Use System Storage Exclusive Flood Control 1617 Annual Flood Control & Multiple Use Carryover Multiple Use Carryover Multiple Use 33.9 Permanent Pool 1540 Permanent 17.6 Pool feet into Annual Flood Control Zone. 1.5 MAF into Annual Flood Control Zone. 6

7 Runoff Components Plains Snowpack Mountain Snowpack Rainfall March and April May, June and July Throughout Year *April 1 Forecast 80% of average 2015 Forecast* = 20.3 MAF 7

8 Plains Snowpack Peak Date: Feb 4, 2015 Source: NOAA National Operational Hydrologic Remote Sensing Center (NOHRSC) 8

9 Mountain Snowpack 9

10 Observed Precipitation last 90 days last 30 days Source: High Plains Regional Climate Center 10

11 Precipitation Outlooks April Apr May - Jun Source: NOAA Climate Prediction Center 11

12 Drought Current Conditions and Outlook Source: National Drought Mitigation Center Source: NOAA Climate Prediction Center 12

13 Annual Runoff above Sioux City, IA 70 Million Acre-Feet Historic Drought Periods Median 2015 Forecast

14 Missouri River Runoff above Sioux City, IA 6 Million Acre-Feet 2015 Actual and Forecasted Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Actual Normal Forecast 14

15 Expected Results for Authorized Purposes in

16 75 ousa ds Million Acre-Feet System Storage April 1 Forecast Top of Exclusive Flood Control 72.4 MAF Base of Exclusive Flood Control 67.7 MAF Base of Annual Flood Control 56.1 MAF System Storage Check J F M A M J J A S O N D J F M A M J J A S O N D J F

17 Elevation in feet msl Fort Peck April 1 Forecast 2250 Top of Exclusive Flood Control 2250 feet msl Base of Exclusive Flood Control 2246 feet msl 2240 Base of Annual Flood Control 2234 feet msl J F M A M J J A S O N D J F M A M J J A S O N D J F

18 1855 Elevation in feet msl Garrison April 1 Forecast Top of Exclusive Flood Control 1854 feet msl 1850 Base of Exclusive Flood Control 1850 feet msl Base of Annual Flood Control feet msl J F M A M J J A S O N D J F M A M J J A S O N D J F

19 Elevation in feet msl Oahe April 1 Forecast Top of Exclusive Flood Control 1620 feet msl Base of Exclusive Flood Control 1617 feet msl 1610 Base of fannual Flood Control feet msl J F M A M J J A S O N D J F M A M J J A S O N D J F

20 Flood Control All 2014 flood water evacuated from reservoir system by early January Storage space available to capture runoff and reduce releases for downstream events Flooding can still occur due to rainfall Ability to reduce downstream stages diminishes as you move further from the control point due to increased travel times 20

21 Hydropower 16 Billion kwh Gavins Point Fort Randall Big Bend Oahe Garrison Fort Peck Forecast 21

22 Navigation March 15 storage check Full service flow support Target locations: Sioux City, Omaha, Nebraska City and Kansas City July 1 storage check Full service flow support except tfor Lower Basic Full length navigation Conservation measures may be implemented if conditions worsen 22

23 Water Supply Water Quality Irrigation Recreation Normal to slightly below normal elevations and releases Lower pools not expected to affect recreation this year No impacts expected to irrigation Water supply Gavins Point winter releases of 12,000 cfs under b i dl b i basic and lower basic Reservoir levels above historic lows Releases adequate between reservoirs 23

24 Fish and Wildlife Steady to rising levels at upper three reservoirs during forage fish spawn Favor Fort Peck and Oahe if runoff not sufficient i May be difficult to accomplish this year without significant rainfall in the basin Minimize hours of zero releases at Fort Randall to the extent possible 24

25 Endangered Species Act of 1973 Each Federal Agency shall... ensure that any action authorized, funded, or carried out by such agency is not likely to jeopardize the continued existence of any endangered or threatened species or result in the destruction or adverse modification of habitat Interior Least Tern Listed Endangered 1986 Piping Plover Listed Threatened 1986 Pallid Sturgeon Listed Endangered

26 Threatened and Endangered Species Piping Plover and Least Tern Gavins Point releases Steady release flow to target Daily release cycle Intra-day peaking patterns Garrison & Fort Randall Fort Randall Measures to minimize take 26

27 Threatened and Endangered Species Bi-Modal lspring Pulse Pallid Sturgeon 2003 Amended d Biological i l Opinion i Reasonable and Prudent Alternative March and May spring pulses not implemented in 2015 Independent science advisory panel (ISAP) determined implemented pulses not accomplishing intended outcomes Forego 2015 spring pulse while pursuing ISAP recommendations 27

28 Summary Below average runoff forecast Reservoir levels expected to decline; begin next year well below base of flood control zone (basic runoff) Good service to all authorized purposes in 2015; impacts likely beginning next winter unless basin conditions improve 28

29 Thank You! Website: Or Google Corps Missouri River 29