Daily Reservoir and Pass-Thru Status Report
July 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%
07/01/2021 204.2 322,313 48.6% 91.4 206,995 80.8% 529,308 57.6% 43.7 158,306 98.3%
06/30/2021 204.2 322,313 48.6% 91.4 206,995 80.8% 529,308 57.6% 43.8 159,229 98.8%
06/01/2021 201.7 282,012 42.5% 88.6 159,190 62.1% 441,202 48.0% 43.9 160,156 99.4%
07/01/2020 201.4 277,357 41.8% 89.4 172,173 67.2% 449,530 48.9% 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
June YTD Remaining June YTD Remaining
06/30/2021 141 4,164 0 6,497 24,943 0 8,184 3,816
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
06/30/2021 40 1,088 7,114 1,546 325,697 07/01/2021 7:15 AM 9.11
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  06/30/2021 MTD YTD 06/30/2021 MTD YTD 06/30/2021 MTD YTD
Air Temp 85     86        
Evaporation 165 8,398 32,232 191 7,840 29,456 356 16,238 61,688
Rainfall 0.02 2.23 17.12 0.44 5.34 19.93      
Stream Flows
Gauging Station 06/30/2021 MTD
NTRT Nueces River at Three Rivers, Texas 174 63,532
NRTT Nueces River at Tilden, Texas 21 21,239
FRTT Frio River at Tilden, Texas 17 35,017
SMTT San Miguel Creek at Tilden, Texas 8 7,783
ARWT Atascosa River at Whitsett, Texas 44 41,551
CCR Release from Choke Canyon Reservoir 58 1,515
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 719 16,870
NCAT Nueces River at Calallen, Texas 461 9,437
RBP Rincon Bayou Pipeline 231 6,028
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 141 104,817
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 23,000   23,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   619
Return Flow Credit Effective   500
Required Passthru Monthly Target 23,000   23,000
Reservoir Inflow 104,817
Estuary Inflows (NCAT + RBP) 15,465
Passthru Surplus / -Deficit -6,416
Report Generated 7/1/2021 at 9:56:15 AM