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<br />FLOODS OF SEPT. 1970 IN ARIZ., UTAH, COLO., AND N. MEX.
<br />
<br />Rio Grande at Wagonwheel Gap, Colo.-Continued
<br />
<br />Gage height. in feet, and discharge. in cubic feet per second, at indicated time, 1970
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge
<br />height height height
<br />Sept. 6 2400 2.30 590 Sept. 15
<br />0200 3.85 2,040 Sept. 13* 0600 3.76 1,940
<br />0500 5.00 3,480 0600 2.37 639 1200 3.56 1,720
<br />1030 5.84 4,660 noo 2.64 842 1800 3.42 1,570
<br />1530 5.00 3,480 1500 3.30 1,450 2400 3.32 1,470
<br />2000 4.28 2,540 1630 3.49 1,640
<br />2400 3.96 2,160 1730 3.86 2,050
<br />
<br />* Daily means computed from data 1n addltIon to flgures shown.
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<br />DOLORES RIVER BASIN
<br />
<br />(3) 09165000. Dolores River below Rico, Colo.
<br />
<br />Jocation. --Lat 37"38'2011, long 108003'35". in swt sec. 15, T. 39 N.. R. 11 W.. Dolores
<br />County, on left bank at upstream side of bridge, at Dolores-Montezuma County line,
<br />0.5 mi (0. 8 km) upstream from Ryman Creek, and 4 mi (6 km) southwest of Rico.
<br />)rainal{e area. --105 mi2 (272 km2).
<br />
<br />}age-heip;ht record. --Water-stage recorder graph. Datum of gage is 8,422.23 ft
<br />(2,567.096 m) above mean sea level.
<br />
<br />)ischarge record. --Stage-discharge relation defined by current-meter measurements
<br />below 1,600 ft3/s (45 m3/s) and by slope-area measurement at 1,930 ft3/s
<br />(54.7 m3/s).
<br />
<br />.1axima. --Sept. 4-18, 1970: Discharge, 1,930 ft3/s (54.7 m3/s) 0130 hours Sept. 6
<br />(gage height,S. 88 ft or 1. 792 m).
<br />1951 to August 1970: Discharge, 2,120 rt3 Is (60.0 m3 Is) June 10, 19'52 (gage
<br />height, 6. 15 ft or 1. 875 m).
<br />Maximum flood known occurred Oct. 5, 1911.
<br />
<br /> Mean discharge, in cubic feet per second, 1970
<br />Day Discharge Day Discharge Day Discharge
<br />;ept. 4 83 Sept. 9 240 Sept. 14 388
<br /> 5 345 10 205 15 254
<br /> 6 1,210 11 180 18 208
<br /> 7 455 12 241 17 177
<br /> 8 296 13 490 18 158
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<br />Gage height, in feet, and discharge; in cubic feet per second, at indicated time, 1970
<br />
<br /> Gage Hour Gage Discharge Hour Gage Discharge
<br />Hour height Discharge height height
<br />iept. 3 Sept. 6* Con. Sept. 12* Con.
<br />2400 2.36 56 0330 5.72 1,820 2400 3.64 356
<br />iept. 4* 0600 5.37 1,540 Sept. 13*
<br />1200 2.39 60 0900 5.00 1,250 0200 3.52 303
<br />1930 2.70 109 1200 4.72 1,020 0400 3.55 314
<br />2100 2.92 155 1600 4. 50 867 0830 4.00 520
<br />2400 2.91 153 2400 4.10 606 1000 4.22 648
<br />iept. 5* Sept. 7 1200 4.12 588
<br />0400 2.75 119 0600 3.92 505 1300 4.15 606
<br />0800 2.71 111 1200 3.81 450 1500 4.06 548
<br />1200 2.82 133 1800 3. 68 388 1800 4.05 535
<br />1500 3.35 280 2400 3.60 354 1930 4.10 584
<br />1600 3.83 455 Sept. 11 2400 3.90 455
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<br />1
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<br />STATION DATA-DOLORES RIVER BASIN
<br />
<br />47
<br />
<br />Dolores River below Rico, Colo.-Continued
<br />
<br />Gage height in feet and discharge, in cubic feet per second, at indicated time, 1970
<br />
<br /> Gage Gage Discharge Hour Gage Discharge
<br />Hour height Discharge Hour height height
<br />1700 3.90 490 2400 2.96 166 Sept. 14
<br />1830 3.81 445 Sept. 12* 0400 3.80 405
<br />2000 3.91 495 1200 2.96 166 1200 3.73 370
<br />2400 5.33 1,500 1730 3.27 240 1600 3.71 358
<br />Sept. 6* 1930 3.85 465 1800 3.65 330
<br />0130 5.88 1,930 2100 3.90 485 2400 3.56 296
<br />
<br />* Daily means computed from data lD addition to flgures shown.
<br />(4) 09166500. Dolores River at Dolores, Colo.
<br />
<br />Location. --Lat 37!'28'15", long 108030'15", in NEtNEt sec. 16, T. 37 ,N., R. 15 W. ,
<br />Montezuma County, on left bank 70 ft (21 m) downstream from bridge on State"
<br />Highway 184 in Dolores and 0.2 mi (0. 3 km) upstream from Lost Canyon Creek.
<br />Drainage area. --556 mi2 (1,440 lan2).
<br />
<br />Gage-height record. --Water-stage recorder graph. Datum of gage is 6,918.74 ft
<br />(2,108.832 m) above mean sea level.
<br />
<br />Discharge record. --Stage-discharge relation defined by current-meter measurements
<br />below 3,200 fP/s (91 m3/s) and by slope-area measurement at 5, 190 ft3/s
<br />(147m3/s).
<br />
<br />Maxima. --Sept. 4-18, 1970: Discharge,S, 190 ft3/s (147 m3/s) 0800 hours Sept. 6
<br />-----rgage height, 9.04 ft or 2. 755 m, in gage well; 9.19 !t or 2. 801 m, from floodmark).
<br />1895 to August 1970: Discharge, 10,000 !t3/s (283 m3/s) Oct. 5, 1911 (gage
<br />height, to. 2 ft (3.11 m). at site 70 ft (21 m) upstream at different datum). from
<br />rating curve extended above 2,800 et3/s (79 m3/s).
<br />
<br /> Mean discharge, in cubic feet per second, 1970
<br />Day Discharge Day Discharge Day Discharge
<br />Sept. 4 235 Sept. 9 563 Sept. 14 980
<br /> 5 462 10 465 15 863
<br /> 6 3,040 11 388 16 528
<br /> 7 1,230 12 380 17 465
<br /> 8 760 13 949 18 400
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<br />Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1970
<br />
<br />Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge
<br /> height height height
<br />Sept. 4 Sept. 6 Con. Sept. 13*
<br />2400 5.50 260 2400 7. 11 1,640 0200 6.36 840
<br />Sept. 5* Sept. 7 0330 6.43 900
<br />0200 5.51 265 0400 6.97 1,470 0900 6.21 720
<br />0700 5.74 394 0800 6.83 1,300 1400 6.45 920
<br />1000 5.76 406 1700 6.63 1,100 1600 6.75 1,220
<br />1300 5.74 394 2400 6.43 900 1900 6.74 1,210
<br />2000 5.80 430 Sept. 8* 2400 6.73 1,200
<br />2400 6. 98 1,500 1200 6.26 780 Sept. 14
<br />Sept. 6 2400 6.10 633 0130 6.75 1,220
<br />0330 7.90 2,900 Sept. 11 0600 6.60 1,070
<br />0600 8.55 4,140 2400 5. 69 358 1200 6.49 960
<br />0800 9.04 5,190 Sept. 12* 1800 6.40 872
<br />1100 8.67 4,360 1100 5.65 334 2400 6.29 784
<br />1230 8.23 3,480 1400 5.68 352 Sept. 15'
<br />1430 7.90 2,880 1900 5.76 400 1200 6.13 656
<br />2000 7.35 1,980 2400 6.00 563 2400 6.02 577
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<br />*Daily means computed from data m addlhon to flgures shown.
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