Daily Reservoir and Pass-Thru Status Report
August 12, 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%
08/12/2021 204.7 330,674 49.9% 93.0 236,887 92.4% 567,561 61.7% 43.9 160,156 99.4%
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%
07/12/2021 204.8 332,359 50.1% 92.6 229,272 89.4% 561,631 61.1% 43.9 160,156 99.4%
08/12/2020 200.3 260,689 39.3% 88.7 160,783 62.7% 421,472 45.9% 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
July YTD Remaining July YTD Remaining
08/11/2021 77 1,386 3,013 9,857 21,583 0 12,000 0
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
08/11/2021 68 179 7,164 1,439 21,789 08/12/2021 7:15 AM 8.80
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  08/11/2021 MTD YTD 08/11/2021 MTD YTD 08/11/2021 MTD YTD
Air Temp 94     94        
Evaporation 402 3,605 44,214 357 3,247 40,421 759 6,852 84,635
Rainfall 0.00 0.43 23.76 0.00 0.7 29.64      
Stream Flows
Gauging Station 08/11/2021 MTD
NTRT Nueces River at Three Rivers, Texas 256 7,444
NRTT Nueces River at Tilden, Texas 35 258
FRTT Frio River at Tilden, Texas 12 175
SMTT San Miguel Creek at Tilden, Texas 9 1,445
ARWT Atascosa River at Whitsett, Texas 71 3,462
CCR Release from Choke Canyon Reservoir 58 633
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 181 1,751
NCAT Nueces River at Calallen, Texas 0 228
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 219 8,431
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 5,000   5,000
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   2,500
Return Flow Credit Effective 08/01/2021 500
Required Passthru Monthly Target 5,000   5,000
Reservoir Inflow 8,431
Estuary Inflows (NCAT + RBP) 228
Passthru Surplus / -Deficit -1,772
Report Generated 9/1/2021 at 4:35:17 PM