REP50256

• Permit No: M1996049
• IBM Index Class Name: Report
• Doc Name: SUBSTITUTE SUPPLY PLAN FOR THE L G EVERIST MARYLAND CREEK RANCH AGGREGATE OPERATION M-96-049
• Media Type: D
• Archive: No

wf ~ ~ ~ ~ ~ r ~ ~ ~s ~ ~ ~ ~ ~ ~
TABLE 6
ESTIMATED EXCHANGE POTENTIAL FROM GREEN MOUNTAIN RESERVOD2
TO THE L.G. EVERIST AGGREGATE RESOURCE OPERATION
r ~ ~•

Month Blue River
below
Rock Creek
(cfs)(D Rock
Creek
(cfs)(2) Blue River
above
Rock Creek
(cfs)(3) Blue River
below
Willow Creek
(cfs)(4) Unit
Gain
(cfs/mi)(5) Blue River
below
Maryland Creek
(cfs)(6) Minimum
StreamFlow
(efs)(7) Exchange
Potential
(AF)(8)
October 84 7.7 76.3 62 2.5 71.1 58 805
November 79 5.0 74.0 59 2.6 68.6 SR 649
December 73 3.6 69.5 57 2.1 64.9 58 426
January 70 3.5 66.6 55 2.0 62.4 SS 268
Febmary 67 3.4 63.7 54 1.7 60.2 58 132
March 72 3.3 68.7 55 2.4 63.7 58 352
April 113 10.0 103.0 87 2.8 97.2 75 1,363
May 327 40.0 287.0 262 4.3 277.9 75 12,457
June 254 49.5 204.5 188 2.8 198.5 75 7,582
July 137 30.5 106.5 88 3.2 99.8 75 1,522
August I15 14.3 100.8 73 4.8 90.7 75 964
September 89 8.3 80.8 63 3.1 74.3 75 0
(I) Flows from Table 21 (Dry Years) of the Metropolitan Denver Water Supply EIS, March 1988. The representative dry year is defined as the average of the mean
monthly Flows for the years 1954, 1955, 1963, and 1964.
(2) Average of mean monthly Flows (or the years 1954 and 1955 from USGS gage Rock Creek near Dillon (09052000). Gage was not operational during 1963 and 1964.
(3) Equals the Rock Creek Flows subtracted Gom the Blue River below Rack Creek (lows.
(4) From Table 20 of the Metropolitan Denver Water Supply EIS. March 1988.
(5) Equals the gain in Flow between the Blue River below Willow Creek and the Blue River above Rock Creek divided by the length of stream (5.8 miles).
(6) Equals the gain in flow between the Blue River below Maryland Creek and the Blue River above Rock Creek (unit gain x 2.1 miles) subtracted from the Blue River
above Rock Creek.
(7) CWCB minimum streamflow from April I to September 30 is 75 cfs and from October I to March 31 is 58 cfs.
(8) Equals the Blue River below Maryland Creek (lows in excess of the CWCB minimum streamtlows, converted to acre-feet.