PLATTE RIVER BASIN

06700000 SOUTH PLATTE RIVER ABOVE CHEESMAN LAKE, CO

LOCATION.--Lat 39°09'46", long 105°18'35", in T.10 S., R.71 W., Douglas County, Hydrologic Unit 10190002, on right bank about 200 ft upstream from high water mark of Cheesman Lake, and 8.0 mi south-southwest of Deckers.

DRAINAGE AREA.--1628 mi2, of which 11.9 mi2 is noncontributing.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--July 1899 to December 1901, October 1924 to September 1943 (no winter records in water years 1931-33, 1935-39, 1942-43).
August 2002 to current year (seasonal records only). Published as South Fork South Platte River at Lake Cheesman, 1899; "below Lake Cheesman", 1900; and South Fork South Platte River at Cheesman, 1901. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/ inventory/?site_no=06700000

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 6,845 ft above NGVD of 1929, from topographic map. July 31, 1899 to Dec. 31, 1901, staff gage at site within 4.5 mi downstream at different datum.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by minor transmountain diversion from Colorado River basin through Boreas Pass ditch, Antero and Elevenmile Canyon Reservoirs, diversions for irrigation of about 40,000 acres, and return flow from irrigated areas. Several measurements of specific conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.

EXTREMES FOR PERIOD OF RECORD (seasonal only).--Maximum discharge, 4,690 ft3/s, July 28, 2003, gage height, 11.54 ft; minimum daily, 3 ft3/s, January 9, 12, 1925, but may have been less during periods of no gage-height record.

EXTREMES FOR 2002 WATER YEAR (seasonal only).--Maximum daily discharge during period August to September, 574 ft3/s, Aug. 13; minimum daily, 77 ft3/s, Sept. 16.

EXTREMES FOR CURRENT YEAR (seasonal only).--Maximum discharge, 4,690 ft3/s, July 28, gage height, 11.54 ft; minimum daily, 53 ft3/s, May 14.

Discharge, cubic feet per second 

WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	---	---	---	---	---	---	---	---	---	---	e565	175
2	---	---	---	---	---	---	---	---	---	---	e571	175
3	---	---	---	---	---	---	---	---	---	---	e559	179
4	---	---	---	---	---	---	---	---	---	---	e420	293
5	---	---	---	---	---	---	---	---	---	---	e339	364
6	---	---	---	---	---	---	---	---	---	---	e300	365
7	---	---	---	---	---	---	---	---	---	---	e210	360
8	---	---	---	---	---	---	---	---	---	---	e208	361
9	---	---	---	---	---	---	---	---	---	---	386	363
10	---	---	---	---	---	---	---	---	---	---	558	320
11	---	---	---	---	---	---	---	---	---	---	564	153
12	---	---	---	---	---	---	---	---	---	---	572	143
13	---	---	---	---	---	---	---	---	---	---	574	145
14	---	---	---	---	---	---	---	---	---	---	570	98
15	---	---	---	---	---	---	---	---	---	---	569	78
16	---	---	---	---	---	---	---	---	---	---	522	77
17	---	---	---	---	---	---	---	---	---	---	405	155
18	---	---	---	---	---	---	---	---	---	---	400	235
19	---	---	---	---	---	---	---	---	---	---	398	243
20	---	---	---	---	---	---	---	---	---	---	397	244
21	---	---	---	---	---	---	---	---	---	---	398	244
22	---	---	---	---	---	---	---	---	---	---	398	219
23	---	---	---	---	---	---	---	---	---	---	397	222
24	---	---	---	---	---	---	---	---	---	---	396	223
25	---	---	---	---	---	---	---	---	---	---	396	218
26	---	---	---	---	---	---	---	---	---	---	393	222
27	---	---	---	---	---	---	---	---	---	---	382	223
28	---	---	---	---	---	---	---	---	---	---	313	225
29	---	---	---	---	---	---	---	---	---	---	232	221
30	---	---	---	---	---	---	---	---	---	---	177	223
31	---	---	---	---	---	---	---	---	---	---	175	---
TOTAL	---	---	---	---	---	---	---	---	---	---	12,744	6,766
MEAN	---	---	---	---	---	---	---	---	---	---	411	226
MAX	---	---	---	---	---	---	---	---	---	---	574	365
MIN	---	---	---	---	---	---	---	---	---	---	175	77
AC-FT	---	---	---	---	---	---	---	---	---	---	25,280	13,420

e Estimated.

Discharge, cubic feet per second 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	---	---	---	---	---	---	128	75	298	135	103	165
2	---	---	---	---	---	---	145	72	315	128	100	149
3	---	---	---	---	---	---	147	71	289	122	104	140
4	---	---	---	---	---	---	137	67	255	113	101	137
5	---	---	---	---	---	---	141	64	264	103	102	126
6	---	---	---	---	---	---	129	62	302	99	105	114
7	---	---	---	---	---	---	110	61	254	94	91	127
8	---	---	---	---	---	---	94	60	235	95	89	140
9	---	---	---	---	---	---	102	57	209	91	88	143
10	---	---	---	---	---	---	104	59	187	82	95	125
11	---	---	---	---	---	---	116	58	181	77	105	119
12	---	---	---	---	---	---	153	57	181	81	105	111
13	---	---	---	---	---	---	139	55	188	81	90	111
14	---	---	---	---	---	---	124	53	210	82	79	116
15	---	---	---	---	---	---	110	63	204	86	74	118
16	---	---	---	---	---	---	102	92	193	90	69	114
17	---	---	---	---	---	---	88	86	202	93	70	99
18	---	---	---	---	---	---	82	83	254	91	73	89
19	---	---	---	---	---	---	86	100	256	101	78	86
20	---	---	---	---	---	---	82	112	240	119	81	84
21	---	---	---	---	---	---	78	113	214	108	74	86
22	---	---	---	---	---	---	77	107	192	101	70	87
23	---	---	---	---	---	---	79	106	165	102	69	86
24	---	---	---	---	---	---	84	119	149	96	98	82
25	---	---	---	---	---	---	87	141	136	90	102	84
26	---	---	---	---	---	---	79	186	130	90	97	79
27	---	---	---	---	---	---	81	199	134	108	97	78
28	---	---	---	---	---	---	83	190	136	350	94	76
29	---	---	---	---	---	---	78	202	137	162	98	74
30	---	---	---	---	---	---	72	214	144	134	124	75
31	---	---	---	---	---	---	---	249	---	114	181	---
TOTAL	---	---	---	---	---	---	3,117	3,233	6,254	3,418	2,906	3,220
MEAN	---	---	---	---	---	---	104	104	208	110	93.7	107
MAX	---	---	---	---	---	---	153	249	315	350	181	165
MIN	---	---	---	---	---	---	72	53	130	77	69	74
AC-FT	---	---	---	---	---	---	6,180	6,410	12,400	6,780	5,760	6,390