Daily Reservoir and Pass-Thru Status Report
August 5, 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%
08/05/2021 204.7 330,674 49.9% 93.0 236,887 92.4% 567,561 61.7% 44.0 161,085 100.0%
08/04/2021 204.7 330,674 49.9% 93.0 236,887 92.4% 567,561 61.7% 43.9 160,156 99.4%
07/05/2021 204.1 320,653 48.4% 91.2 203,365 79.3% 524,018 57.0% 44.0 161,085 100.0%
08/05/2020 200.5 263,671 39.8% 88.9 163,995 64.0% 427,666 46.5% 44.1 161,085 100.0%
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
July YTD Remaining July YTD Remaining
08/04/2021 142 565 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
08/04/2021 0 0 6,984 1,646 4,764 08/05/2021 7:15 AM 8.66
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  08/04/2021 MTD YTD 08/04/2021 MTD YTD 08/04/2021 MTD YTD
Air Temp 90     91        
Evaporation 274 1,224 41,833 234 1,205 38,379 508 2,429 80,212
Rainfall 0.40 0.4 23.73 0.00 0.39 29.33      
Stream Flows
Gauging Station 08/04/2021 MTD
NTRT Nueces River at Three Rivers, Texas 381 1,566
NRTT Nueces River at Tilden, Texas 2 16
FRTT Frio River at Tilden, Texas 0 0
SMTT San Miguel Creek at Tilden, Texas 0 9
ARWT Atascosa River at Whitsett, Texas 123 232
CCR Release from Choke Canyon Reservoir 58 230
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 169 754
NCAT Nueces River at Calallen, Texas 24 114
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 324 1,345
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   1,345
Reservoir Inflow 1,345
Estuary Inflows (NCAT + RBP) 114
Passthru Surplus / -Deficit 1,769
Report Generated 9/1/2021 at 4:21:13 PM