Daily Reservoir and Pass-Thru Status Report
May 8, 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%
05/08/2021 197.3 218,822 33.0% 85.6 115,055 44.9% 333,877 36.3% 43.9 160,156 99.4%
05/07/2021 197.3 218,822 33.0% 85.7 116,400 45.4% 335,222 36.5% 44.0 161,085 100.0%
04/08/2021 197.3 218,822 33.0% 85.6 115,055 44.9% 333,877 36.3% 42.6 148,332 92.1%
05/08/2020 201.9 285,141 43.0% 89.4 172,173 67.2% 457,314 49.8% 40.1 126,918 78.8%
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
April YTD Remaining April YTD Remaining
05/07/2021 135 924 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
05/07/2021 0 4 4,447 5,757 105,662 05/08/2021 7:15 AM 12.80
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  05/07/2021 MTD YTD 05/07/2021 MTD YTD 05/07/2021 MTD YTD
Air Temp 87     84        
Evaporation 253 1,655 18,284 148 1,332 16,856 401 2,987 35,140
Rainfall 0.00 0.36 3.31 0.00 0.4 4.29      
Stream Flows
Gauging Station 05/07/2021 MTD
NTRT Nueces River at Three Rivers, Texas 170 7,403
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 969 1,352
SMTT San Miguel Creek at Tilden, Texas 41 5,022
ARWT Atascosa River at Whitsett, Texas 69 7,889
CCR Release from Choke Canyon Reservoir 58 403
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 181 912
NCAT Nueces River at Calallen, Texas 3 51
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 1,122 13,374
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 13,374
Estuary Inflows (NCAT + RBP) 51
Passthru Surplus / -Deficit -564
Report Generated 5/8/2021 at 7:36:59 AM