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Water-Year Summary for Site USGS 09180500

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Available Parameters
00010 Temperature, water(Mean,Max.,Min.)  
00045 Precipitation(Sum)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Mean,Max.,Min.)  
00300 Dissolved oxygen(Max.,Mean,Min.)  
00400 pH(Med.,Max.,Min.)  
63680 Turbidity, Form Neph(Min.,Mean,Max.)  

Water year 2020: 2019-10-01 to 2020-09-30
 
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USGS Water-Year Summary 2020
09180500 COLORADO RIVER NEAR CISCO, UT
LOCATION - Lat 38°48'38", long 109°17'34" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.17, T.23 S., R.24 E., Grand County, UT, Hydrologic Unit 14030005, on the left bank one mile downstream from Dolores River, 11 mi. south of Cisco, UT, 36 mi. downstream from Colorado-Utah state line, 97 mi. upstream from Green River, 235 mi. upstream from San Juan River, and at mile 1,022 from Arizona-Sonora border.
DRAINAGE AREA - 24,100 mi². approximately.
REVISIONS HISTORY -

WSP 918: 1913, 1937. WSP 1313: 1918-22.

Specific conductance data for Dec. 29, 2022, were revised on Jan. 8, 2024, deleted due to fouling by ice.

SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1895 to current year (1895 to 1910, calendar-year estimates only). Monthly discharge only for some periods, published in WSP 1313. Published as Grand River near Moab, October 1913 to November 1914, and as Grand River near Cisco, November 1914 to September 1917.
GAGE - Water-stage recorder and crest-stage gage. Elevation of the base gage datum is 4,092.35 ft above NAVD of 1988 from a Level 2 GNSS survey on Aug 25, 2020. The orthometric height (peak-to-peak) error is 0.24 ft. Prior to Aug 25, 2020, the elevation of the gage datum was listed as 4,090 ft above NGVD of 1929, taken from a river-profile map. Prior to November 10, 1914, several staff and chain gages at bridge near Moab, 31 mi downstream at datum 3,937.73 ft above NGVD of 1929.
REMARKS - Records generally good except for estimated daily discharges, which are fair to poor. Diversions above station for irrigation and power, including several transmountain diversions. Flow regulated by Blue Mesa Reservoir since November 27, 1965.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood on Jul 4, 1884 reached a discharge of about 125,000 ft³/s, from flood record at Fruita, Colorado.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 76,800 ft³/s, Jun 19, 1917, gage height, 19.7 ft; minimum recorded, 558 ft³/s, Jul 21, 1934, gage height, 0.44 ft.
Water-Data Report 2020
09180500 COLORADO RIVER NEAR CISCO, UT -- Continued
DISCHARGE, CUBIC FEET PER SECOND
YEAR 2019-10-01 to 2020-09-30
DAILY MEAN VALUES
[e, Value has been estimated.]
Day Oct
 2019
13,680
23,790
33,830
43,810
53,890
63,870
73,690
83,780
93,790
103,750
113,770
123,940
134,080
144,090
154,070
164,040
174,070
184,010
194,070
204,150
214,310
224,310
234,310
244,390
254,420
264,470
274,530
284,540
294,700
305,010
314,960
Total128,099
Mean4,133
Max5010
Min3680
Ac-ft254,100
Day Nov
2019
15,110
24,960
35,210
44,920
54,790
64,700
74,660
84,610
94,700
104,510
114,490
124,440
134,410
144,070
154,270
164,250
174,280
184,280
194,270
204,010
214,030
224,100
234,090
243,990
253,890
263,810
273,790
283,710
293,600
303,790
 -- 
Total129,700
Mean4,325
Max5210
Min3600
Ac-ft257,299
Day Dec
2019
13,930
23,780
33,520
43,500
53,780
63,770
73,800
83,720
93,690
103,740
114,120
123,970
133,980
144,090
154,250
164,210
174,010
183,730
19e3,510
20e3,450
21e3,520
22e3,590
233,750
243,860
254,020
264,250
274,240
284,070
293,930
303,830
31e3,660
Total119,300
Mean3,847
Max4250
Min3450
Ac-ft236,600
Day Jan
2020
1e3,670
2e3,500
3e3,420
4e3,380
5e3,330
6e3,300
7e3,280
8e3,250
9e3,190
10e3,180
11e3,150
12e3,170
13e3,060
14e3,210
15e3,350
16e3,470
17e3,510
18e3,400
19e3,240
20e3,140
21e3,210
22e3,280
23e3,340
243,440
253,470
263,410
273,410
283,440
293,360
303,330
313,140
Total103,000
Mean3,323
Max3670
Min3060
Ac-ft204,400
Day Feb
2020
12,970
22,930
32,970
43,010
52,940
62,590
72,870
82,860
93,100
103,180
113,210
123,090
133,030
143,000
153,010
163,010
173,030
183,060
193,050
202,940
212,870
222,860
232,840
242,890
252,960
262,890
272,810
282,670
292,610
 -- 
 -- 
Total85,250
Mean2,940
Max3210
Min2590
Ac-ft169,100
Day Mar
2020
12,700
22,720
32,760
42,770
52,740
62,710
72,760
82,790
92,850
102,930
112,970
123,010
132,840
143,010
153,270
163,080
172,970
182,950
193,140
203,350
213,400
223,190
233,270
243,040
252,920
262,880
273,020
283,300
293,330
303,390
313,300
Total93,360
Mean3,012
Max3400
Min2700
Ac-ft185,200
Day Apr
2020
13,240
23,090
32,970
43,160
53,210
63,150
72,980
83,040
93,090
103,230
113,270
123,300
133,400
143,490
153,160
162,870
172,920
182,850
192,770
202,600
212,610
222,520
232,440
242,490
252,610
262,650
272,750
282,980
293,280
303,940
 -- 
Total90,060
Mean3,002
Max3940
Min2440
Ac-ft178,600
Day May
2020
14,760
25,660
36,870
47,440
57,800
67,710
77,000
86,560
96,460
106,280
116,230
126,690
137,960
148,340
158,090
168,030
178,240
188,860
1910,100
2011,900
2113,000
2212,600
2311,500
2410,600
259,870
269,020
278,160
287,880
298,460
309,900
3111,700
Total263,700
Mean8,505
Max13000
Min4760
Ac-ft523,000
Day Jun
2020
113,600
214,900
314,900
414,300
513,100
612,600
712,500
813,500
911,000
109,730
118,720
127,590
136,790
146,680
156,930
166,960
176,360
185,820
195,500
205,280
215,180
224,950
234,720
244,460
254,400
264,370
274,580
284,840
294,930
304,820
 -- 
Total244,000
Mean8,134
Max14900
Min4370
Ac-ft484,000
Day Jul
2020
14,640
24,320
33,970
43,750
53,610
63,500
73,440
83,280
93,160
102,830
112,670
122,520
132,400
142,330
152,250
162,330
172,400
182,440
192,630
202,540
212,410
222,270
232,250
242,280
252,360
262,550
272,950
283,010
292,990
302,830
312,590
Total89,500
Mean2,887
Max4640
Min2250
Ac-ft177,500
Day Aug
2020
12,570
22,460
32,330
42,290
52,240
62,190
72,150
82,170
92,180
102,280
112,350
122,280
132,220
142,240
152,290
162,320
172,290
182,260
192,210
202,160
212,170
222,220
232,240
242,230
252,200
262,150
272,110
282,100
292,140
302,220
312,420
Total69,680
Mean2,248
Max2570
Min2100
Ac-ft138,200
Day Sep
2020
12,610
22,640
32,570
42,470
52,390
62,360
72,360
82,440
92,990
103,390
113,590
123,660
133,490
143,250
153,080
162,880
172,760
182,780
192,740
202,710
212,680
222,650
232,620
242,580
252,550
262,500
272,440
282,490
292,500
302,490
 -- 
Total82,660
Mean2,755
Max3660
Min2360
Ac-ft164,000
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1914 - 2020, BY WATER YEAR (WY)
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Mean 4,069 3,792 3,278 3,076 3,215 3,783 7,844 18,020 20,790 8,608 4,254 3,764
Max 9,416 7,601 6,588 6,371 6,326 8,412 22,590 42,090 55,530 31,750 11,400 11,330
(WY) (1942) (1987) (1987) (1985) (1985) (1985) (1942) (1984) (1917) (1957) (1984) (1929)
Min 1,353 1,729 2,023 1,876 1,843 2,009 1,638 2,322 2,504 1,057 1,017 1,078
(WY) (1935) (1935) (2003) (2003) (2003) (1977) (1977) (1977) (2002) (1934) (1934) (1934)
Water-Data Report 2020
09180500 COLORADO RIVER NEAR CISCO, UT -- Continued
SUMMARY STATISTICS
Water Year 2020 Water Years 1914 - 2020
Annual total 1,498,000                   
Annual mean 4,094          7,048         
Highest annual mean           14,930          1984
Lowest annual mean           2,557          2002
Highest daily mean 14,900          Jun 02 73,200          Jun 19, 1917
Lowest daily mean 2,100          Aug 28 640.0        Jul 21, 1934
Annual 7-day minimum 2,164          Aug 24 736.0        Jul 15, 1934
Maximum peak flow 15,300a         Jun 02 76,800a         Jun 19, 1917
Maximum peak stage 6.69b      Jun 03 21.52c      Jun 03, 1914
Annual runoff (cfsm) 0.170      0.292     
Annual runoff (inches) 2.31       3.97      
10 percent exceeds 6,939          17,200         
50 percent exceeds 3,350          3,870         
90 percent exceeds 2,360          2,270         
a Discharge affected by Regulation or Diversion
b Max gage height not associated with peak discharge
c Gage height at different site and(or) datum
USGS Water-data graph for site USGS 09180500