Lake Tahoe Tahoe Dam below Lake Tahoe

Lake Tahoe

Tahoe Dam below Lake Tahoe

Stampede

Truckee Meadows M&I

Truckee Meadows

Derby Dam

Pyramid Lake Fish

Operations

• Current Operations – 1935 Truckee River Agreement

• Future Operations – Truckee River Operating Agreement

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

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

Reservoir Operations

• 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

Tahoe Prosser Exchange

Truckee River Operational Priorities

• 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

Truckee River Operational Priorities

• 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

COLORED WATER VIA ACCOUNTS

STORAGE ACCOUNTS

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

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

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

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

Sources For Stampede Storage Categories With TROA

NOTWITHSTANDING

• NOTWITHSTANDING

Potential TROA Signatories

• 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

DIADvisor – Farad

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

Upper Truckee Vicinity

USGS Hydrologic Response Unit

MMS ESP Tool

ESP Forecasts

Daily Natural Flow Data

• Bad data [Jorgeson, 2002]

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

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

RiverWare Models

• Accounting

• Forecasting

• Scheduling

• Planning

Water Quality Settlement Agreement

Outline of approach

Scenarios

Climate forecast

Results (cont.)

Violations and WQCW released (1988-1994)

Water Quality Modeling

• Utilize existing basin-specific water quality models

• Eventually provide real-time decisions

• Operate interactively with RiverWare

• Give example of integration between RW and other models
• Create similarity to WaRSMP couterpart “MMS”

WQ Modeling – Coming Soon

COLORED WATER VIA ACCOUNTS

Cui-ui