Daily Reservoir and Pass-Thru Status Report
September 1, 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%
09/01/2021	204.2	322,313	48.6%	92.8	233,068	90.9%	555,381	60.4%	43.6	157,385	97.7%
08/31/2021	204.2	322,313	48.6%	92.8	233,068	90.9%	555,381	60.4%	43.7	158,306	98.3%
08/01/2021	204.8	332,359	50.1%	93.0	236,887	92.4%	569,246	61.9%	43.9	160,156	99.4%
09/01/2020	199.8	253,336	38.2%	88.0	149,794	58.4%	403,130	43.9%	43.0	151,919	94.3%
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
				August	YTD	Remaining		August	YTD	Remaining
08/31/2021		77	2,987	0	9,857	21,583		0	12,000	0
COLORADO RIVER WATER SUPPLY (CRWT)
Date		Daily Intake	MTD	YTD	Daily Flow	MTD Flow	Date		Time		Gage Height
08/31/2021		67	1,477	9,939	814	34,180	09/01/2021		7:15 AM		7.88
WEATHER RELATED INFORMATION
	Choke Canyon Reservoir				Lake Corpus Christi				CCR/LCC Combined
	08/31/2021	MTD	YTD		08/31/2021	MTD	YTD		08/31/2021	MTD	YTD
Air Temp	96				95
Evaporation	436	10,814	51,423		333	8,672	45,846		769	19,486	97,269
Rainfall	0.00	0.69	24.02		0.00	1.43	30.37
Stream Flows
Gauging Station								08/31/2021		MTD
NTRT	Nueces River at Three Rivers, Texas							127		14,112
NRTT	Nueces River at Tilden, Texas							2		4,626
FRTT	Frio River at Tilden, Texas							0		185
SMTT	San Miguel Creek at Tilden, Texas							0		1,457
ARWT	Atascosa River at Whitsett, Texas							21		4,044
CCR	Release from Choke Canyon Reservoir							58		1,785
NRMT	Nueces River at Mathis, Texas (La Fruta Bridge)							199		5,579
NCAT	Nueces River at Calallen, Texas							0		307
RBP	Rincon Bayou Pipeline							0		0
Reservoir InFlow
Computed as:		(NTRT+FRTT+SMTT)-Release from Choke Canyon						70		13,970
ESTUARY INFLOWS AND PASSTHRU REQUIREMENTS
Target Passthru	Monthly Target			2,500					2,500
	Salinity Relief Credit			0	Effective
Credit / -Deficit From Previous Month					Date Deficit Satisfied				0
Return Flow Credit					Effective				500
Required Passthru	Monthly Target			2,500					2,500
	Reservoir Inflow			13,970
Estuary Inflows (NCAT + RBP)									307
Passthru Surplus / -Deficit									-1,693
Report Generated			9/1/2021			at	2:36:17 PM