Daily Reservoir and Pass-Thru Status Report
July 4, 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%
07/04/2021 204.2 322,313 48.6% 91.3 205,177 80.0% 527,490 57.4% 43.8 159,229 98.8%
07/03/2021 204.2 322,313 48.6% 91.3 205,177 80.0% 527,490 57.4% 43.8 159,229 98.8%
06/04/2021 202.2 289,869 43.7% 89.1 167,241 65.2% 457,110 49.7% 44.0 161,085 100.0%
07/04/2020 201.3 275,815 41.6% 89.3 170,521 66.5% 446,336 48.6% 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
07/03/2021 112 336 348 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
07/03/2021 68 203 6,228 2,144 6,308 07/04/2021 7:15 AM 9.80
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/03/2021 MTD YTD 07/03/2021 MTD YTD 07/03/2021 MTD YTD
Air Temp 91     92        
Evaporation 329 852 33,084 222 614 30,070 551 1,466 63,154
Rainfall 0.00 0.42 17.54 0.02 0.06 19.99      
Stream Flows
Gauging Station 07/03/2021 MTD
NTRT Nueces River at Three Rivers, Texas 244 656
NRTT Nueces River at Tilden, Texas 13 102
FRTT Frio River at Tilden, Texas 6 24
SMTT San Miguel Creek at Tilden, Texas 4 16
ARWT Atascosa River at Whitsett, Texas 51 191
CCR Release from Choke Canyon Reservoir 58 173
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 709 2,132
NCAT Nueces River at Calallen, Texas 425 1,304
RBP Rincon Bayou Pipeline 230 688
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 197 524
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   524
Reservoir Inflow 524
Estuary Inflows (NCAT + RBP) 1,993
Passthru Surplus / -Deficit -4,947
Report Generated 7/4/2021 at 7:49:50 AM