Daily Reservoir and Pass-Thru Status Report
September 11, 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%
09/11/2021 203.9 317,346 47.9% 92.4 225,500 88.0% 542,846 59.1% 43.5 156,467 97.1%
09/10/2021 203.9 317,346 47.9% 92.4 225,500 88.0% 542,846 59.1% 43.5 156,467 97.1%
08/11/2021 204.7 330,674 49.9% 93.0 236,887 92.4% 567,561 61.7% 43.9 160,156 99.4%
09/11/2020 199.9 254,794 38.4% 88.1 151,341 59.0% 406,135 44.2% 42.8 150,120 93.2%
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
August YTD Remaining August YTD Remaining
09/10/2021 78 768 2,987 12,844 18,596 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
09/10/2021 68 676 9,138 1,046 9,012 09/11/2021 7:15 AM 8.21
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  09/10/2021 MTD YTD 09/10/2021 MTD YTD 09/10/2021 MTD YTD
Air Temp 94     93        
Evaporation 317 3,546 54,969 241 2,983 48,829 558 6,529 103,798
Rainfall 0.00 0.13 24.15 0.00 0.04 30.41      
Stream Flows
Gauging Station 09/10/2021 MTD
NTRT Nueces River at Three Rivers, Texas 91 1,008
NRTT Nueces River at Tilden, Texas 0 1
FRTT Frio River at Tilden, Texas 0 13
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 10 117
CCR Release from Choke Canyon Reservoir 58 576
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 407 3,646
NCAT Nueces River at Calallen, Texas 0 2
RBP Rincon Bayou Pipeline 192 1,373
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 33 445
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 11,500   11,500
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   -1,693
Return Flow Credit Effective   0
Required Passthru Monthly Target 11,500   445
Reservoir Inflow 445
Estuary Inflows (NCAT + RBP) 1,376
Passthru Surplus / -Deficit -763
Report Generated 9/11/2021 at 11:07:20 AM