Daily Reservoir and Pass-Thru Status Report
July 15, 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%
07/15/2021 205.0 335,741 50.7% 93.1 238,806 93.2% 574,547 62.5% 43.9 160,156 99.4%
07/14/2021 205.0 335,741 50.7% 93.0 236,887 92.4% 572,628 62.3% 43.9 160,156 99.4%
06/15/2021 204.6 328,994 49.6% 92.0 218,027 85.1% 547,021 59.5% 44.0 161,085 100.0%
07/15/2020 200.9 269,701 40.7% 88.8 162,385 63.3% 432,086 47.0% 43.8 159,229 98.8%
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
07/14/2021 78 1,436 348 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
07/14/2021 0 428 6,454 4,387 89,837 07/15/2021 7:15 AM 11.62
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  07/14/2021 MTD YTD 07/14/2021 MTD YTD 07/14/2021 MTD YTD
Air Temp 87     89        
Evaporation 286 2,836 35,068 235 2,524 31,980 521 5,360 67,048
Rainfall 0.00 5.84 22.96 0.02 7.8 27.73      
Stream Flows
Gauging Station 07/14/2021 MTD
NTRT Nueces River at Three Rivers, Texas 2,442 22,039
NRTT Nueces River at Tilden, Texas 572 2,344
FRTT Frio River at Tilden, Texas 258 2,527
SMTT San Miguel Creek at Tilden, Texas 171 6,618
ARWT Atascosa River at Whitsett, Texas 484 12,877
CCR Release from Choke Canyon Reservoir 58 768
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 174 5,562
NCAT Nueces River at Calallen, Texas 270 17,315
RBP Rincon Bayou Pipeline 0 2,296
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 2,813 30,417
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 4,500   2,250
Salinity Relief Credit 2,250 Effective 07/11/2021
Credit / -Deficit From Previous Month Date Deficit Satisfied   -6,416
Return Flow Credit Effective   500
Required Passthru Monthly Target 2,250   2,250
Reservoir Inflow 30,417
Estuary Inflows (NCAT + RBP) 19,611
Passthru Surplus / -Deficit 11,445
Report Generated 7/15/2021 at 10:27:06 AM