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.

Plot last updated at : 20:00 hrs - Thu, 19 Sep 2019



                             JEMEZ CANYON RESERVOIR
                                  JEMEZ RIVER
                           DRAINAGE AREA =1,034 SQ MI

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

TOP OF PARAPET WALL       275,131       5,351     5,274.60

TOP OF DAM                259,342       5,176     5,271.60     9,800   324,000

MAXIMUM POOL              257,276       5,153     5,271.20     9,700   318,000

TOP OF FLOOD CONTROL       99,334       2,862     5,232.00     8,340   0
AND SPILLWAY CREST

AUTHORIZED FLOOD CONTROL
SPACE                      73,000

SEDIMENT SPACE
INITIAL                    44,213
1958 SURVEY*               42,821
1959 SURVEY*               40,874
1965 SURVEY*               39,809
1975 SURVEY*               33,100
1983 SURVEY*               29,712
1991 SURVEY*               27,485       
1998 SURVEY*               24,425
2016 LIDAR*                26,334        1,164    5,194.93 

ZERO STORAGE                    0           0     5,133.47     

CONDUIT INVERT                  0           0     5,125.00

COMMENTS

ALL ELEVATIONS ARE IN NGVD29.  ADD 3.08 FT TO CONVERT TO NAVD88
1 INCH OF RUNOFF EQUALS 55,147 AC-FT
FLOOD SPACE EQUALS 1.32 INCHES OF RUNOFF
A-C TABLE ADOPTED JANUARY 2019 BASED ON NOV 13, 2016 LIDAR
FROM 1985-2000 HELD AVERAGE 25,000 AC-FT POOL IN SEDIMENT RESERVE SPACE

*Sediment space remaining below spillway crest elevation 5232.00

                    Sediment Deposits
Date of Survey   Period   Period    Average
                 Years    Total     Annual
                 (yrs)   (ac-ft)  (ac-ft/yr)
  Oct 1953           -        -         -
  Jan 1958          4.25    1,392       328
  Aug 1959          1.67    1,947     1,166
  Dec 1965          6.33    1,065       168
  Jan 1975          9.08    6,709       739
  Dec 1983          8.92    3,388       380
  Jun 1991          7.50    2,227       296
  Jun 1998          7.00    3,060       437
  Nov 2016         18.42   -1,909      -104