Daily Reservoir and Pass-Thru Status Report
July 10, 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%
07/10/2021 204.6 328,994 49.6% 92.3 223,623 87.2% 552,617 60.1% 43.9 160,156 99.4%
07/09/2021 204.2 322,313 48.6% 91.9 216,174 84.3% 538,487 58.6% 44.0 161,085 100.0%
06/10/2021 204.5 327,318 49.4% 91.8 214,326 83.6% 541,644 58.9% 44.0 161,085 100.0%
07/10/2020 201.1 272,748 41.1% 89.0 165,614 64.6% 438,362 47.7% 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
07/09/2021 114 1,047 348 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
07/09/2021 0 428 6,454 8,178 51,566 07/10/2021 7:15 AM 13.41
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/09/2021 MTD YTD 07/09/2021 MTD YTD 07/09/2021 MTD YTD
Air Temp 85     88        
Evaporation 166 1,664 33,896 284 1,492 30,948 450 3,156 64,844
Rainfall 0.47 5.83 22.95 0.70 7.76 27.69      
Stream Flows
Gauging Station 07/09/2021 MTD
NTRT Nueces River at Three Rivers, Texas 3,315 5,584
NRTT Nueces River at Tilden, Texas 93 214
FRTT Frio River at Tilden, Texas 107 167
SMTT San Miguel Creek at Tilden, Texas 1,010 2,366
ARWT Atascosa River at Whitsett, Texas 1,024 2,223
CCR Release from Choke Canyon Reservoir 58 518
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 0 4,913
NCAT Nueces River at Calallen, Texas 3,752 9,544
RBP Rincon Bayou Pipeline 230 2,065
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 4,374 7,599
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   500
Required Passthru Monthly Target 4,500   4,500
Reservoir Inflow 7,599
Estuary Inflows (NCAT + RBP) 11,609
Passthru Surplus / -Deficit 1,193
Report Generated 7/10/2021 at 9:50:09 AM