Daily Reservoir and Pass-Thru Status Report
April 25, 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%
04/25/2021 197.1 216,196 32.6% 85.2 109,768 42.8% 325,964 35.5% 42.4 146,555 91.0%
04/24/2021 197.1 216,196 32.6% 85.2 109,768 42.8% 325,964 35.5% 42.4 146,555 91.0%
03/25/2021 197.5 221,467 33.4% 86.0 120,491 47.0% 341,958 37.2% 43.0 151,919 94.3%
04/25/2020 202.2 289,869 43.7% 89.8 178,868 69.8% 468,737 51.0% 40.5 130,232 80.8%
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
March YTD Remaining March YTD Remaining
04/24/2021 64 1,911 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
04/24/2021 68 1,098 4,047 2,084 25,200 04/25/2021 7:15 AM 9.52
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  04/24/2021 MTD YTD 04/24/2021 MTD YTD 04/24/2021 MTD YTD
Air Temp 90     90        
Evaporation 335 4,695 15,530 296 3,717 14,652 631 8,412 30,182
Rainfall 0.00 0.11 2.11 0.00 0.08 2.36      
Stream Flows
Gauging Station 04/24/2021 MTD
NTRT Nueces River at Three Rivers, Texas 54 1,328
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 12 22
CCR Release from Choke Canyon Reservoir 58 1,382
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 132 3,686
NCAT Nueces River at Calallen, Texas 2 82
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: NRTT+FRTT+SMTT+ARWT 12 22
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   22
Reservoir Inflow 22
Estuary Inflows (NCAT + RBP) 82
Passthru Surplus / -Deficit 0
Report Generated 4/25/2021 at 8:25:49 AM