Warning! This data has NOT been reviewed for accuracy.

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Time series plot showing recent conditions at the lake or reservoir.  See tabulated data for details.

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                           SANTA ROSA DAM AND LAKE
                                PECOS RIVER
                         DRAINAGE AREA = 2,434 SQ MI

                        VOLUME         AREA       ELEV.      FLOW IN CFS
                        IN ACRE-FEET   IN ACRES   IN FEET    OUTLET  SPILLWAY
						    (NAVD88)

TOP OF DAM              801,174        16,906     4,826.11   6,300   374,000

MAXIMUM DESIGN POOL (1) 777,751        16,555     4,824.71   6,100   353,000

TOP OF FLOOD CONTROL    432,165        10,619     4,799.11   5,800         0
AND SPILLWAY
CREST

TOP OF CONSERVATION     253,470         7,022     4,778.61   5,300         0

2019 CONSERVATION   (2) 100,579         3,839     4,749.55   4,800         0
ENTITLEMENT

ZERO STORAGE                  0            0      4,668.00       0         0

CONDUIT INVERT                0            0      4,632.11       0         0

STREAMBED		      0            0      4,618.11       0         0

SEDIMENT RESERVE
	1979 INITIAL  82,000 AC-FT
	1987 SURVEY   74,773 AC-FT
	1996 SURVEY   73,277 AC-FT
	2015 SURVEY   67,015 AC-FT

COMMENTS

AUTHORIZED SPACE
TOTAL IRRIGATION         200,000 AC-FT 
FLOOD CONTROL SPACE      167,000 AC-FT
SEDIMENT RESERVE          82,000 AC-FT

1 INCH OF RUNOFF EQUALS 129,813 AC-FT
FLOOD CONTROL SPACE EQUALS 1.39 INCHES OF RUNOFF
E-A-C TABLE ADOPTED JANUARY 2017

(1) MAXIMUM DESIGN POOL ELEVATION BASED ON THE SUPERSEDED 1980 PMF STUDY USED TO
DEVELOP THE MODIFIED SPILLWAY DESIGN. THE SANTA ROSA DAM PROBABLE MAXIMUM FLOOD 
DETERMINATION, DATED DECEMBER 2008, REVISED AUGUST 2013, PRODUCED A COMPUTED MAXIMUM
POOL ELEVATION OF 4,821.4 FEET.
(2) CALCULATED ANNUALLY.
ALL ELEVATIONS IN NAVD88. SUBTRACT 2.11 FEET TO CONVERT ELEVATIONS TO NGVD29.