Daily Reservoir and Pass-Thru Status Report
February 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%
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%
02/21/2021 197.9 226,815 34.2% 86.3 124,670 48.6% 351,485 38.2% 43.6 157,385 97.7%
01/22/2021 198.3 232,238 35.0% 86.7 130,369 50.9% 362,607 39.4% 44.0 161,085 100.0%
02/22/2020 202.5 294,634 44.5% 90.2 185,698 72.4% 480,332 52.3% 38.5 114,197 70.9%
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
January YTD Remaining January YTD Remaining
02/21/2021 129 1,991 0 0 31,440 3,270 3,270 8,730
COLORADO RIVER WATER SUPPLY (CRWT)
Date Daily
Intake
MTD YTD Daily Flow MTD Flow Date Time Gage Height
02/21/2021 0 708 1,570 1,671 20,517 02/22/2021 7:15 AM 9.09
WEATHER RELATED INFORMATION
  Choke Canyon Reservoir Lake Corpus Christi CCR/LCC Combined
  02/21/2021 MTD YTD 02/21/2021 MTD YTD 02/21/2021 MTD YTD
Air Temp 76     79        
Evaporation 118 1,476 4,258 98 1,670 4,762 216 3,146 9,020
Rainfall 0.00 0.34 1.34 0.00 0.56 1.41      
Stream Flows
Gauging Station 02/21/2021 MTD
NTRT Nueces River at Three Rivers, Texas 68 1,601
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 10 415
CCR Release from Choke Canyon Reservoir 58 1,207
NRMT Nueces River at Mathis, Texas (La Fruta Bridge) 189 3,616
NCAT Nueces River at Calallen, Texas 59 187
RBP Rincon Bayou Pipeline 0 0
Reservoir InFlow
Computed as: (NTRT+FRTT+SMTT)-Release from Choke Canyon 10 397
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   78
Return Flow Credit Effective   500
Required Passthru Monthly Target 1,200   397
Reservoir Inflow 397
Estuary Inflows (NCAT + RBP) 187
Passthru Surplus / -Deficit 0
Report Generated 2/22/2021 at 10:22:41 AM