Daily Reservoir and Pass-Thru Status Report
April 29, 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%
04/29/2021 196.9 213,589 32.2% 85.2 109,768 42.8% 323,357 35.2% 42.3 145,671 90.4%
04/28/2021 196.9 213,589 32.2% 85.1 108,470 42.3% 322,059 35.0% 42.3 145,671 90.4%
03/29/2021 197.5 221,467 33.4% 85.8 117,754 45.9% 339,221 36.9% 43.0 151,919 94.3%
04/29/2020 202.2 289,869 43.7% 89.7 177,182 69.1% 467,051 50.8% 41.0 134,434 83.5%
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
04/28/2021 61 2,156 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
04/28/2021 67 1,369 4,318 2,422 36,097 04/29/2021 7:15 AM 10.13
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  04/28/2021 MTD YTD 04/28/2021 MTD YTD 04/28/2021 MTD YTD
Air Temp 93     91        
Evaporation 257 5,612 16,447 213 4,407 15,342 470 10,019 31,789
Rainfall 0.02 0.13 2.13 0.00 0.08 2.36      
Stream Flows
Gauging Station 04/28/2021 MTD
NTRT Nueces River at Three Rivers, Texas 54 1,553
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 2 33
CCR Release from Choke Canyon Reservoir 58 1,612
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 165 4,253
NCAT Nueces River at Calallen, Texas 0 82
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: NRTT+FRTT+SMTT+ARWT 2 35
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   35
Reservoir Inflow 35
Estuary Inflows (NCAT + RBP) 82
Passthru Surplus / -Deficit 0
Report Generated 4/29/2021 at 9:03:05 AM