Daily Reservoir and Pass-Thru Status Report
July 7, 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%
07/07/2021 204.2 322,313 48.6% 91.4 206,995 80.8% 529,308 57.6% 44.0 161,085 100.0%
07/06/2021 204.1 320,653 48.4% 91.2 203,365 79.3% 524,018 57.0% 44.0 161,085 100.0%
06/07/2021 204.2 322,313 48.6% 90.4 189,164 73.8% 511,477 55.6% 43.9 160,156 99.4%
07/07/2020 201.2 274,279 41.4% 89.2 168,877 65.9% 443,156 48.2% 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
07/06/2021 111 670 348 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
07/06/2021 68 406 6,431 7,960 20,005 07/07/2021 7:15 AM 13.61
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/06/2021 MTD YTD 07/06/2021 MTD YTD 07/06/2021 MTD YTD
Air Temp 89     83        
Evaporation 106 1,469 33,701 170 1,143 30,599 276 2,612 64,300
Rainfall 0.33 1.47 18.59 1.16 1.64 21.57      
Stream Flows
Gauging Station 07/06/2021 MTD
NTRT Nueces River at Three Rivers, Texas 256 1,286
NRTT Nueces River at Tilden, Texas 1 111
FRTT Frio River at Tilden, Texas 7 41
SMTT San Miguel Creek at Tilden, Texas 167 189
ARWT Atascosa River at Whitsett, Texas 66 324
CCR Release from Choke Canyon Reservoir 58 345
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 711 4,258
NCAT Nueces River at Calallen, Texas 459 2,575
RBP Rincon Bayou Pipeline 231 1,380
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 372 1,171
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   1,171
Reservoir Inflow 1,171
Estuary Inflows (NCAT + RBP) 3,954
Passthru Surplus / -Deficit -3,632
Report Generated 7/7/2021 at 8:55:02 AM