Daily Reservoir and Pass-Thru Status Report
May 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%
05/05/2021 197.3 218,822 33.0% 85.6 115,055 44.9% 333,877 36.3% 44.0 161,085 100.0%
05/04/2021 197.2 217,506 32.8% 85.4 112,393 43.8% 329,899 35.9% 43.9 160,156 99.4%
04/05/2021 197.4 220,142 33.2% 85.6 115,055 44.9% 335,197 36.5% 42.7 149,224 92.6%
05/05/2020 202.0 286,713 43.3% 89.5 173,834 67.8% 460,547 50.1% 40.9 133,588 82.9%
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
April YTD Remaining April YTD Remaining
05/04/2021 133 522 2,289 6,497 24,943 0 4,500 7,500
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
05/04/2021 0 4 4,447 25,805 75,708 05/05/2021 7:15 AM 22.45
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/04/2021 MTD YTD 05/04/2021 MTD YTD 05/04/2021 MTD YTD
Air Temp 84     83        
Evaporation 230 834 17,463 180 791 16,315 410 1,625 33,778
Rainfall 0.00 0.36 3.31 0.00 0.4 4.29      
Stream Flows
Gauging Station 05/04/2021 MTD
NTRT Nueces River at Three Rivers, Texas 2,779 5,230
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 1 8
SMTT San Miguel Creek at Tilden, Texas 1,310 4,689
ARWT Atascosa River at Whitsett, Texas 2,243 7,117
CCR Release from Choke Canyon Reservoir 58 230
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 128 466
NCAT Nueces River at Calallen, Texas 1 44
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 4,032 9,696
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru Monthly Target 1,200   1,200
Salinity Relief Credit 0 Effective  
Credit / -Deficit From Previous Month Date Deficit Satisfied   85
Return Flow Credit Effective   500
Required Passthru Monthly Target 1,200   1,200
Reservoir Inflow 9,696
Estuary Inflows (NCAT + RBP) 44
Passthru Surplus / -Deficit -571
Report Generated 5/5/2021 at 8:34:20 AM