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<br />70
<br />
<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N. MEX.
<br />
<br />
<br />STATION DATA-SAN JUAN RIVER BASIN
<br />
<br />(33) 09355100. Na\'a.io Reservoir near Archuleta, N. Mex.
<br />Location. \-Lat 3.6048'28", long 107"36'31", in swtSEt sec. 18, T. 30 N., R. '1 W., San
<br />Juan County, In gage shaft of outlet works structure near right abutment of Na a'
<br />Dam on San Juan River at river mile 145.0 (233, 3 km), 5.5 mi {8. B km} east ;f JO
<br />Archuleta and 33 mt (53 km) ease of Farmington.
<br />
<br />DrainaR:e area. --3, 230 mi2 (8,370 km2J. approximately.
<br />
<br />Day
<br />Sept. 4
<br />5
<br />6
<br />7
<br />8
<br />
<br />Discharg
<br />
<br />732 Sept. 9 772
<br />799 10 l,lBO
<br />790 11 1,370
<br />510 12 1,400
<br />540 13 1,380
<br />
<br />1,390
<br />1, 390
<br />L 390
<br />1.380
<br />1,370
<br />
<br />Gage-heighl record. --Water-stage recorder graph. Datum of gage is at mean sea level.
<br />
<br />Maxima. --September 1970: Contents, 1,266,000 acre-ft (1.560 hm3) Sept. 21, 22, 23.
<br />24 (elevation, 6.053.77 It or 1,845,189 m).
<br />1962 to August 1970: Contents, I, 164,000 aCre-ft (I, 44Q hm3) Aug. 5, 6, 1969
<br />(elevation, 6,044.99 ft or 1,842.513 m).
<br />
<br />(35) 09357500. Animas River at HowardsvHle, Colo.
<br />
<br />Remarks. --Reservoir i~ fo:rmed by earth-roc:k-fill dam, completed in June 1963; sto:r'age
<br />began June 2'7, 1962. Capacity, 1,708,600 acre-ft (2, 110 hm3) between elevations
<br />5,720 ft or L 743 m (upstream toe of dam) and 6,085 ft or I, ass m (crest of spillway).
<br />Usable capacity 1,696,000 acre-ft (2,090 hm3) above elevation 5, 774. 9,ft or 1,760.19 m
<br />(minimum operating level). Dead storage below elevation 5, 774.9 ft (1,760, 19 m) is
<br />12,600 acre-ft (15.5 hm3). Figures given herein are usable contents.
<br />
<br />Location. --Lat 37'>50'00", long 107'>35'5511, in sec. 12, T. 41 N., R.7 W., San Juan
<br />County, on right bank 1,000 ft (300 m) downstream from bridge on State Highway 1
<br />0.3 mi (0, 5 km) southwest of Howardsville, and 0.4 roi (0. 6 km) downstream from
<br />Cunningham Creek.
<br />
<br />Drainage area. --55. 9 mi2 (144.8 km2),
<br />
<br />,
<br />
<br />Gage-height record. --Water-stage recorder graph.
<br />(2, 931. 256 m) above mean sea level.
<br />
<br />Datum of gage is 9,616.98 ft
<br />
<br />Cooperation. --Records furnished by Bureau of ReclamaHon.
<br />
<br />Discharge record. --Stage-discharge relation defined by currE'nt-meter measurementl
<br />below 950 ft:Jls (27 m3/s).
<br />
<br />Elevation, in feet, and contents, in thousands of acre-feet, at 2400 hours of indicated day,
<br />September 1970
<br />
<br />~. --Sept. 4-18, 1970: Discharge, 1,170 ft3/s (33, 1 m3/s) 0130 hours Sept. 6
<br />(gage height, 3.65 ft or 1. 113 m).
<br />1935 to August 1970: Discharge, 1,980 ft3/s (56.1 m3/s) June 18, 1949 (gage
<br />height, 4.36 ft or 1. 329 ro). from rating curve extended above 950 ft3/s (27 m:J/s);
<br />gage height, 5.24 ft (1. 597 m) Feb. 18, 1958 (backwater from snowalide).
<br />Maximum nood known occurred Oct. 5, 1911.
<br />
<br />Day Elevation Contents Day Elevation Contents
<br />,. 6,043.69 1,150 16. 6,052.37 1,250
<br />2. 6,043.66 1,149 17. 6,052.82 1,255
<br />3. 6,043.64 1,149 18. 8,053. 18 1, 259
<br />4 6,043.63 1,149 19. 6,053.43 1.262
<br />5. 6,044.15 1,155 20. 6,053.65 1,265
<br />6. 6,046.71 1,184 21. 6,053.72 1. 266
<br />7. 6,047.62 1,194 22. 6,053.76 1.266
<br />B. 6, 048. 05 1,199 23. 6,053.77 1. 266
<br />9. 6,048.27 1,201 24. 6,053,73 1,266
<br />10. 6,048.38 1,203 25. 6,053.68 1,265
<br />11 6,048.42 1,203 26. 6,053.65 L 285
<br />12. 6,048.57 1,205 27 . 6,053.56 1,264
<br />13. 6,049.06 1,210 2B. 6,053.50 1, 263
<br />14. 6,050.70 1,230 29 . 6, 053. 43 1,252
<br />15. 6,051. 77 1,242 30. 6,053.34 1,261
<br /> (34) 09355500. San Juan River near Archuleta, N. Mex,
<br />
<br />Day Discharge Day Discharge Day Dischargf
<br />Sept, 4 90 Sept. 9 250 Sept, 14 429
<br /> 5 252 10 217 15 329
<br /> 6 634 11 1BB 16 257
<br /> 7 332 12 223 17 217
<br /> 8 2B5 13 475 1B .. 1B8
<br />
<br />Mean discharge, in cubic feet per second, 1970
<br />
<br />Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 197 I
<br />of Animas River at HowardsvUle Colo
<br />
<br />Ga~e~heiRht record. ~-Watcr-stage recorder graph. Altitude of gage is 5,655 ft
<br />(1,723.6 m), from river-profile survey.
<br />
<br />Hour Gage Discharge Hour Gage DiSCharge Hour Gage Discha"
<br /> height height height
<br />Sept. 3 Sept. 6 Con. Sept. 13' Con.
<br />2400 1. 45 69 1200 2.80 528 1000 2.91 59
<br />Sept. 4 2400 2. 50 378 1800 2.80 52
<br />1000 1.45 69 Sept. 7 2400 2.71 46
<br />1400 1.52 B1 1300 2.31 301 Sept. 14
<br />1700 1. 80 134 1800 2. 40 337 0300 2.67 44
<br />1800 1.80 134 1900 2.40 337 0530 2.75 48
<br />2400 1.66 106 2400 2.34 313 0600 2.64 42
<br />Sept. 5 Sept. 11 1200 2. 65 42
<br />1100 1.61 97 2400 1.91 175 1600 2.70 44
<br />13CO 1,78 130 Sept. 12 2400 2.60 3B
<br />1700 2.47 349 1200 1, 89 170
<br />2100 2.71 465 1900 2.42 345
<br />2400 3.43 965 2400 2.21 264
<br />Sept. 6 Sept. 13'
<br />0130 3.65 1,170 0100 2.20 260
<br />0600 3.15 75" 0500 2.36 321
<br />
<br />'" Daily mean computed from data In addltlon to flgures shown.
<br />
<br />Location.--Lat36"48'05",longl07G41'5l", inNtsec.20, T.30N., R.8W., in San
<br />Juan County, on left bank at river mile 136.8 (220. 1 km), 0.5 mi (0.8 km) upstream
<br />from Gobernador Canyon, 0.8 mi (1. 3 km) northeast of Archuleta, and 7.2 mi
<br />(11. 6 km) downstream from Navajo Dam.
<br />
<br />Draina~e area, --3. 260 mi2 (8,440 km2), approximately.
<br />
<br />Discharge record. --Stage-discharge relation defined by current-meter measurements.
<br />
<br />Maxima. HSept. 4-18, 1970: Discharge, L 400 ft3/s (39. 6 m3/s) Sept. 12 (gage
<br />height, 4:10 ft or 1.,250 m).
<br />1954 to August'1970: Discharge, 18.900ft3/s(535m3/s)July27, 1957(gage
<br />height, II. 00 ft or 3.353 m, site and datum then in use).
<br />June 1962 to August 1970: Discharge, 6,500 ft3/s (184 m3/s) June 20, 1965
<br />(gage hei"ght, 4.57 ft or 1.393 mI.
<br />
<br />Remarks. __Flow regulated by Navajo Reservoir since June 1962.
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