Truckee River Water Accounting Modeling Effort

1. Truckee RiverWater Accounting Modeling Effort RiverWare User Meeting June 2003 @ Univ. of Colorado, CADSWES, Boulder CO

2. WINNEMUCCA LAKE (dry) Pyramid Lake Paiute Indian Reservation CALIFORNIA NEVADA PYRAMID LAKE Nixon Stillwater NWR Derby Dam Fernley Reno/Sparks TRUCKEE CANAL Fallon STAMPEDE TRUCKEE RIVER Fallon Paiute-Shoshone Indian Reservation INDEPENDENCE Newlands Project BOCA LAHONTAN PROSSER Truckee CARSON LAKE MARTIS CARSON RIVER DONNER Carson City Tahoe City LAKE TAHOE

3. Lake Tahoe

4. Tahoe Dam below Lake Tahoe

5. Stampede

7. WINNEMUCCA LAKE (dry) Pyramid Lake Paiute Indian Reservation CALIFORNIA NEVADA PYRAMID LAKE Nixon Stillwater NWR Derby Dam Fernley Reno/Sparks TRUCKEE CANAL Fallon STAMPEDE TRUCKEE RIVER Fallon Paiute-Shoshone Indian Reservation INDEPENDENCE Newlands Project BOCA LAHONTAN PROSSER Truckee CARSON LAKE MARTIS CARSON RIVER DONNER Carson City Tahoe City LAKE TAHOE

8. Truckee Meadows M&I

9. Truckee Meadows

10. Derby Dam

11. Pyramid Lake Fish

12. Operations • Current Operations – 1935 Truckee River Agreement • Future Operations – Truckee River Operating Agreement

13. INDEPENDENCE CA NV DONNER Reservoir Operations(Private) Independence Lake • Storage owned by Sierra Pacific Power Co. • Released for M&I drought relief Donner Lake • Storage owned by Sierra Pacific Power Co. and Truckee-Carson Irrigation District • Released in fall for M&I/Irrigation

14. STAMPEDE CA NV PROSSER MARTIS Reservoir Operations(Federal) Stampede Reservoir • Cui-ui and Lahontan • Released for M&I cutthroat trout Prosser Creek Reservoir • Uncommitted water (cui-ui) Lahontan cutthroat trout • Released for M&I / Irrigation Martis Creek Reservoir • Flood control

15. Lake Tahoe and Boca water Released for Floriston Rates (Orr Ditch Decree) -- 300-500 cfs at Farad (Stateline) Tahoe-Prosser Exchange Maintain 50-70 cfs downstream from Lake Tahoe Flood control in Prosser and Boca BOCA PROSSER CA NV LAKE TAHOE Reservoir Operations Lake Tahoe$ Prosser Creek Reservoir $Boca Reservoir

16. STAMPEDE CA NV PROSSER MARTIS Tahoe Prosser Exchange

17. 1) 9,500 AF Donner & 3,000 AF Independence 2) Claims 1&2 3) Diversions in California prior to October 28, 1990 (except Orr Ditch Decree rights & Sierra Valley Decree) 4) 40 cfs by Sierra 5) California diversions after Oct 28, 1990 6) Orr Ditch rights 7) Floriston rates 8) 25,000 AF Boca 9) Claim 3 Truckee River Operational Priorities

18. 10) 15,850 AF Boca 11) 14,500 AF Independence 12)126,000 AF Stampede 13) 30,000 AF Prosser 14) Tribe’s unappropriated water Truckee River Operational Priorities

19. Water Quality Water/Fernley M&I Water Fish Credit Non-Firm M&I Credit Fish Water Firm M&I Credit COLORED WATER VIA ACCOUNTS

20. Water Quality Water/Fernley M&I Water Fish Credit Non-Firm M&I Credit Fish Water Firm M&I Credit

21. STORAGE ACCOUNTS

22. TROA (types of water) • Floriston Rate Water • Project Water • POSW Water • Imported Water • Additional California Environmental Credit Water • California Environmental Credit Water • California M&I Credit Water • Fernley Municipal Credit Water

23. TROA (types of water) • Fish Credit Water • Fish Water • Joint Program Fish Credit Water • Newlands Project Credit Water • Other Credit Water • Power Company Emergency Credit Water • Power Company M&I Credit Water (Firm and Non-Firm M&I) • Project Water in Another Reservoir • Water Quality Credit Water

24. TROA Credit Water Priorities • 1. Impoundment of California M&I Credit Water and California Environmental Credit Water in Lake Tahoe • 2. Operations involving Power Company M&I Credit Water, Fish Credit Water, Joint Program Fish Credit Water, and certain operations of Fish Water (see related section below) • 3. Operations, other than impoundment in Lake Tahoe, involving California M&I Credit Water and California Environmental Credit Water • 4. Operations involving Water Quality Credit Water or Fernley Municipal Credit Water • 5. Operations involving Project Water in Another Reservoir, including Project Water that becomes Project Water in Another Reservoir • 6. Impoundment of Additional California Environmental Credit Water • 7. Operations involving Newlands Project Credit Water • 8. Operations, other than impoundment of Additional California Environmental Credit Water, involving Other Credit Water and Additional California Environmental Credit Water

25. TROA Water Spill Order • 1. Other Credit Water and Additional California Environmental Credit Water • 2. Newlands Project Credit Water • 3. Project Water in Another Reservoir • 4. Water Quality Credit Water and Fernley Municipal Credit Water • 5. California Environmental Credit Water • 6. California M&I Credit Water • 7. Fish Credit Water, Joint Program Fish Credit Water, and Non-Firm M&I Credit Water • 8. Project Waters and Private Waters from their own reservoirs

26. Exchanged from Lake Tahoe Other Credit Water Acquired diversion rights Water Quality Water/Fernley M&I Water California M&I Water Fish Credit Non-Firm M&I Credit Storable Little Truckee River Single purpose power component of Floriston Rates Fish Water Private Water & Former Agricultural Water Rights Firm M&I Credit M&I Emergency Drought Supply Sources For Stampede Storage Categories With TROA

27. NOTWITHSTANDING

28. U.S Department of the Interior State of California State of Nevada Pyramid Lake Paiute Tribe Sierra Pacific Power Co. Fallon Paute-Shoshone Tribes Truckee-Carson Irrigation District Potential TROA Signatories • Town of Fernley • Churchill County • Washoe County • City of Sparks • Washoe County Water Conservation District • City of Reno • Carson-Truckee Water Conservancy District

29. --- Data Centered DSS ---

30. DIADvisor – Farad

31. --- Data Centered DSS ---

32. NRCS APR 1 FORECASTS - KAF • YEAR ACTUAL FORECST % ERR • 1990 27.4 30 - 9 • 1991 50.6 50 + 1 • 1992 17.5 38 - 117 • 1993 258.9 195 + 25 • 1994 32.5 50 - 54 • 1995 469.0 260 + 45 • 1996 304.1 210 + 31 • 1997 249.2 310 - 24 • 1998 314.2 270 + 14 • 1999 284.0 235 + 17

33. Upper Truckee Vicinity PRMS Basin delineation for Upper Truckee Basin

34. AUTOMATED PARAMETER ESTIMATION USING THE GIS WEASEL

35. USGS Hydrologic Response Unit

36. MMS ESP Tool All Computed Traces using 1975 - 1998

37. MMS ESP Tool Operator selected 10, 50, and 90 % probability of exceedance

38. ESP Forecasts La Niña Years ENSO Neutral

39. --- Data Centered DSS ---

40. Daily Natural Flow Data • Bad data [Jorgeson, 2002]

41. Data Storage System (HEC-DSS) • Corps of Engineers Database • Excellent for time series data • Temporary data base until HDB in place • Poor for storing table data, metadata

42. Hydrologic Data Base (HDB)Current Research and Development • Database of Record • store base data and derive all other data • track all changes of data • able to reproduce data that decisions were made from • consistent view of the historical, current and future state of the system • “Corporate” HDB • keeping each database “in sync”, redundancy • HDB Web Access

43. --- Data Centered DSS ---

44. RiverWare Models • Accounting • Forecasting • Scheduling • Planning

46. PYRAMID LAKE CALIFORNIA NEVADA Nixon STAMPEDE Reno/Sparks TRUCKEE RIVER INDEPENDENCE BOCA PROSSER MARTIS DONNER LAKE TAHOE Water Quality Settlement Agreement

47. Outline of approach

48. Scenarios

49. Valid May 2002 0.5 MO LL Monthly, Temperature Climate forecast • Modify the target temperature based on: • Volume of WQCW available • Climate forecast of above normal temperatures

50. Results (cont.)