Daily Reservoir and Pass-Thru Status Report
December 26, 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%
12/26/2021 202.2 289,869 43.7% 91.2 203,365 79.3% 493,234 53.7% 43.9 160,156 99.4%
12/25/2021 202.3 291,453 44.0% 91.3 205,177 80.0% 496,630 54.0% 43.9 160,156 99.4%
11/26/2021 202.6 296,231 44.7% 91.7 212,485 82.9% 508,716 55.3% 43.6 157,385 97.7%
12/26/2020 198.4 233,606 35.2% 86.8 131,815 51.4% 365,421 39.8% 44.0 161,085 100.0%
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
12/25/2021 129 3,230 3,960 24,564 6,876 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
12/25/2021 0 0 9,327 1,810 38,271 12/26/2021 7:15 AM 9.10
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  12/25/2021 MTD YTD 12/25/2021 MTD YTD 12/25/2021 MTD YTD
Air Temp 81     85        
Evaporation 120 3,047 75,703 105 3,066 68,348 225 6,113 144,051
Rainfall 0.00 0.11 28.46 0.00 0.38 38.57      
Stream Flows
Gauging Station 12/25/2021 MTD
NTRT Nueces River at Three Rivers, Texas 57 1,573
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 2
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 8 180
CCR Release from Choke Canyon Reservoir 58 1,439
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 170 3,807
NCAT Nueces River at Calallen, Texas 1 21
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: NRTT+FRTT+SMTT+ARWT 8 268
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 4,500   4,500
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied 12/01/2021 1,974
Return Flow Credit Effective   500
Required Passthru Monthly Target 4,500   268
Reservoir Inflow 268
Estuary Inflows (NCAT + RBP) 21
Passthru Surplus / -Deficit 0
Report Generated 12/26/2021 at 9:54:42 AM