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USGS
Water Resources of Colorado


GREEN RIVER BASIN

09237450 YAMPA RIVER ABOVE STAGECOACH RESERVOIR, CO

LOCATION.--Lat 40°16'09", long 106°52'49", in SW14SW14 sec.36, T.4 N., R.85 W., Routt County, Hydrologic Unit 14050001, on left bank 1.4 mi downstream from Jack Creek and 4.0 mi east of Oak Creek.

DRAINAGE AREA.--208 mi2.

PERIOD OF RECORD.--October 1988 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09237450

REVISED RECORDS.--WDR CO-00-2: Drainage area.

GAGE.--Water-stage recorder with satellite telemetry and concrete control. Elevation of gage is 7,240 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good except for estimated daily discharges, which are poor. Diversions for irrigation of about 12,000 acres upstream from station. Natural flow of stream affected by 2 diversions for irrigation to Egeria Creek into Colorado River basin and by storage in Stillwater, Yampa and YamColo Reservoirs (total capacity 15,820 acre-ft). Several measurements of specifc conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.

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

22

34

e24

e32

e36

25

79

112

201

79

74

52

2

22

33

e24

e32

e38

27

125

105

225

74

70

47

3

54

31

e25

e31

e35

e23

112

92

159

68

63

46

4

44

36

e26

e32

e34

e25

62

107

145

68

69

42

5

34

35

e27

e32

e34

e24

52

115

136

66

59

41

6

29

40

e24

e31

e34

e23

52

105

131

69

54

51

7

26

36

e26

e31

e30

33

43

95

138

76

59

71

8

23

32

e25

e30

e30

32

39

94

128

76

66

74

9

22

37

30

e32

e29

30

57

108

130

70

60

49

10

21

36

34

e32

e28

e35

96

121

142

73

58

62

11

21

40

e31

e34

e28

e38

138

100

152

71

58

77

12

21

43

e32

e32

e26

39

135

90

137

67

57

60

13

20

43

e34

32

e31

e50

123

90

117

68

53

52

14

23

35

e32

36

e34

e57

130

99

112

68

51

46

15

23

41

e34

e36

e32

66

121

114

98

66

49

44

16

24

44

e32

e34

e29

76

109

124

94

70

47

39

17

23

33

e34

e35

e30

67

92

126

95

74

58

38

18

23

33

e34

e35

e29

52

89

125

96

74

73

38

19

25

43

e32

e36

e27

e64

89

118

95

74

58

39

20

25

33

e32

e35

e28

56

78

104

101

77

52

39

21

24

41

e32

e35

e28

53

74

101

103

76

48

37

22

26

41

e34

e33

e28

53

79

98

98

67

56

36

23

31

38

e35

e32

e28

65

95

95

97

62

72

33

24

32

35

e35

e32

e30

76

107

97

90

66

80

31

25

30

35

e35

e33

33

61

182

91

89

67

67

31

26

29

37

e34

e33

30

61

211

85

89

71

59

31

27

28

27

e34

e32

31

60

166

88

87

70

55

35

28

28

e26

e32

e33

29

49

134

99

82

68

64

35

29

29

e25

e32

e34

---

42

121

105

81

73

53

35

30

29

e23

e32

e36

---

42

126

122

80

74

54

35

31

31

---

e30

e35

---

48

---

124

---

73

60

---

TOTAL

842

1,066

957

1,028

859

1,452

3,116

3,249

3,528

2,195

1,856

1,346

MEAN

27.2

35.5

30.9

33.2

30.7

46.8

104

105

118

70.8

59.9

44.9

MAX

54

44

35

36

38

76

211

126

225

79

80

77

MIN

20

23

24

30

26

23

39

85

80

62

47

31

AC-FT

1,670

2,110

1,900

2,040

1,700

2,880

6,180

6,440

7,000

4,350

3,680

2,670

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 2003, BY WATER YEAR (WY)
MEAN

50.3

51.4

42.7

41.5

42.0

61.9

113

120

115

99.2

73.0

51.3

MAX

116

85.1

71.1

74.2

75.4

113

259

278

348

167

153

135

(WY)

(1998)

(1998)

(1996)

(1996)

(1996)

(1998)

(1996)

(1996)

(1997)

(1995)

(1997)

(1997)

MIN

27.2

32.0

29.2

21.4

29.4

38.7

48.7

13.9

12.3

17.3

25.3

17.4

(WY)

(2003)

(1995)

(1990)

(1990)

(1991)

(1992)

(1995)

(2002)

(2002)

(2002)

(2002)

(2002)

SUMMARY STATISTICS
FOR 2002 CALENDAR YEAR
FOR 2003 WATER YEAR
WATER YEARS 1989 - 2003
ANNUAL TOTAL
11,461.0
21,494
ANNUAL MEAN
31.4
58.9
71.9
HIGHEST ANNUAL MEAN
135 1997
LOWEST ANNUAL MEAN
33.2 2002
HIGHEST DAILY MEAN
116 Apr 1
225 Jun 2
582 Jun 9, 1997
LOWEST DAILY MEAN
5.3 May 10
20 Oct 13
a5.3 May 10, 2002
ANNUAL SEVEN-DAY MINIMUM
8.9 May 8
22 Oct 8
8.9 May 8, 2002
MAXIMUM PEAK FLOW
273 Jun 1
765 Mar 26, 1998
MAXIMUM PEAK STAGE
b4.51 Jun 1
c5.96 Mar 26, 1998
ANNUAL RUNOFF (AC-FT)
22,730
42,630
52,090
10 PERCENT EXCEEDS
48
112
133
50 PERCENT EXCEEDS
30
44
53
90 PERCENT EXCEEDS
12
27
31

e Estimated.
a Also occurred May 11, 2002.
b Maximum gage height, 6.09 ft, Mar 14, backwater from ice.
c Maximum gage height, 7.31 ft, Dec 4, 1997, backwater from ice.


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U.S. Geological Survey
Water Resources of Colorado
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Last Modified: April 29, 2004