Daily Reservoir and Pass-Thru Status Report
April 6, 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%
04/06/2021 197.3 218,822 33.0% 85.6 115,055 44.9% 333,877 36.3% 42.7 149,224 92.6%
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%
03/06/2021 197.8 225,471 34.0% 86.2 123,267 48.1% 348,738 37.9% 43.5 156,467 97.1%
04/06/2020 202.4 293,042 44.2% 90.1 183,978 71.8% 477,020 51.9% 39.6 122,849 76.3%
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
March YTD Remaining March YTD Remaining
04/05/2021 132 659 2,543 4,208 27,232 0 4,500 7,500
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
04/05/2021 0 0 2,949 715 3,962 04/06/2021 7:15 AM 7.92
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  04/05/2021 MTD YTD 04/05/2021 MTD YTD 04/05/2021 MTD YTD
Air Temp 81     81        
Evaporation 184 985 11,820 172 940 11,875 356 1,925 23,695
Rainfall 0.00 0.02 2.02 0.00 0 2.28      
Stream Flows
Gauging Station 04/05/2021 MTD
NTRT Nueces River at Three Rivers, Texas 58 291
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 1
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 1 6
CCR Release from Choke Canyon Reservoir 58 288
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 139 754
NCAT Nueces River at Calallen, Texas 6 7
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 0 5
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   15
Return Flow Credit Effective   500
Required Passthru Monthly Target 1,200   5
Reservoir Inflow 5
Estuary Inflows (NCAT + RBP) 7
Passthru Surplus / -Deficit 0
Report Generated 4/6/2021 at 9:38:25 AM