Daily Reservoir and Pass-Thru Status Report
July 8, 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%
07/08/2021 204.2 322,313 48.6% 91.7 212,485 82.9% 534,798 58.2% 44.0 161,085 100.0%
07/07/2021 204.2 322,313 48.6% 91.4 206,995 80.8% 529,308 57.6% 44.0 161,085 100.0%
06/08/2021 204.4 325,645 49.1% 91.1 201,561 78.6% 527,206 57.4% 43.9 160,156 99.4%
07/08/2020 201.2 274,279 41.4% 89.1 167,241 65.2% 441,520 48.0% 44.1 161,085 100.0%
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
June YTD Remaining June YTD Remaining
07/07/2021 127 796 348 6,844 24,596 3,816 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
07/07/2021 23 428 6,454 14,868 34,872 07/08/2021 7:15 AM 17.49
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/07/2021 MTD YTD 07/07/2021 MTD YTD 07/07/2021 MTD YTD
Air Temp 89     79        
Evaporation 0 1,469 33,701 0 1,143 30,599 0 2,612 64,300
Rainfall 0.93 2.4 19.52 3.72 5.36 25.29      
Stream Flows
Gauging Station 07/07/2021 MTD
NTRT Nueces River at Three Rivers, Texas 341 1,628
NRTT Nueces River at Tilden, Texas 2 113
FRTT Frio River at Tilden, Texas 5 46
SMTT San Miguel Creek at Tilden, Texas 463 651
ARWT Atascosa River at Whitsett, Texas 204 528
CCR Release from Choke Canyon Reservoir 58 403
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 655 4,913
NCAT Nueces River at Calallen, Texas 518 3,093
RBP Rincon Bayou Pipeline 228 1,608
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 751 1,922
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   -6,416
Return Flow Credit Effective   0
Required Passthru Monthly Target 4,500   1,922
Reservoir Inflow 1,922
Estuary Inflows (NCAT + RBP) 4,701
Passthru Surplus / -Deficit -3,637
Report Generated 7/8/2021 at 8:43:02 AM