Daily Reservoir and Pass-Thru Status Report
December 1, 2021
Reservoir Supply (AcFt); Stream Flow (AcFt); Evaporation (AcFt); Elevation (Ft); Rainfall (Inches); Temperature (°F); Gage Height (Ft MSL)
RESERVOIR STATISTICS
Effective June 24, 2017, updated total reservor capacities for Choke Canyon Reservoir (2012 TWDB Volumetric Survey) and
Lake Corpus Christi (2016 TWDB Volumetric Survey) are being reflected in the Daily Reservoir System and Pass-Thru Status Report
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined Lake Texana
Date Elevation Volume % Capacity Elevation Volume % Capacity Volume % Capacity Elevation Volume % Capacity
FULL 220.5 662,821 100% 94.0 256,339 100% 919,160 100% 44.0 161,085 100%
12/01/2021 202.5 294,634 44.5% 91.6 210,649 82.2% 505,283 55.0% 43.9 160,156 99.4%
11/30/2021 202.5 294,634 44.5% 91.6 210,649 82.2% 505,283 55.0% 43.9 160,156 99.4%
11/01/2021 203.0 302,657 45.7% 91.9 216,174 84.3% 518,831 56.4% 43.7 158,306 98.3%
12/01/2020 198.9 240,518 36.3% 87.2 137,687 53.7% 378,205 41.1% 43.8 159,229 98.8%
LAKE TEXANA WATER SUPPLY*
* The split between Non-Interruptible and Interruptible amounts are updated monthly, usually the first working day of the month, so they reflect the total and remaining amounts as of the end of the previous month
Date Daily Intake MTD Non-Interuptible Interruptible
November YTD Remaining November YTD Remaining
11/30/2021 130 3,960 0 20,603 10,837 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
11/30/2021 0 0 9,327 1,769 85,655 12/01/2021 7:15 AM 8.81
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  11/30/2021 MTD YTD 11/30/2021 MTD YTD 11/30/2021 MTD YTD
Air Temp 75     76        
Evaporation 130 4,230 72,656 117 4,477 65,282 247 8,707 137,938
Rainfall 0.00 0.91 28.35 0.00 1.43 38.19      
Stream Flows
Gauging Station 11/30/2021 MTD
NTRT Nueces River at Three Rivers, Texas 74 2,347
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 5
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 3 148
CCR Release from Choke Canyon Reservoir 58 1,727
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 134 4,715
NCAT Nueces River at Calallen, Texas 0 99
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 16 625
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 4,000   4,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied 11/01/2021 2,000
Return Flow Credit Effective   500
Required Passthru Monthly Target 4,000   625
Reservoir Inflow 625
Estuary Inflows (NCAT + RBP) 99
Passthru Surplus / -Deficit 1,974
Report Generated 12/1/2021 at 9:02:47 AM