Daily Reservoir and Pass-Thru Status Report
March 22, 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%
03/22/2021 197.6 222,797 33.6% 85.9 119,118 46.5% 341,915 37.2% 43.1 152,823 94.9%
03/21/2021 197.6 222,797 33.6% 85.9 119,118 46.5% 341,915 37.2% 43.1 152,823 94.9%
02/22/2021 197.9 226,815 34.2% 86.3 124,670 48.6% 351,485 38.2% 43.6 157,385 97.7%
03/22/2020 202.4 293,042 44.2% 89.8 178,868 69.8% 471,910 51.3% 37.9 109,657 68.1%
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
February YTD Remaining February YTD Remaining
03/21/2021 76 1,247 1,664 1,664 29,776 1,230 4,500 7,500
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
03/21/2021 51 1,379 2,949 1,004 21,575 03/22/2021 7:15 AM 8.28
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  03/21/2021 MTD YTD 03/21/2021 MTD YTD 03/21/2021 MTD YTD
Air Temp 77     76        
Evaporation 120 3,711 8,895 136 3,337 9,038 256 7,048 17,933
Rainfall 0.00 0.22 1.6 0.00 0.51 2.21      
Stream Flows
Gauging Station 03/21/2021 MTD
NTRT Nueces River at Three Rivers, Texas 58 1,223
NRTT Nueces River at Tilden, Texas 0 0
FRTT Frio River at Tilden, Texas 0 3
SMTT San Miguel Creek at Tilden, Texas 0 0
ARWT Atascosa River at Whitsett, Texas 2 66
CCR Release from Choke Canyon Reservoir 58 1,209
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 151 2,752
NCAT Nueces River at Calallen, Texas 0 15
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 0 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   449
Return Flow Credit Effective   500
Required Passthru Monthly Target 1,200   35
Reservoir Inflow 35
Estuary Inflows (NCAT + RBP) 15
Passthru Surplus / -Deficit 0
Report Generated 3/22/2021 at 10:41:10 AM