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<br /> Table 6.--Summary statistics for streamflow and selected water-qualitg properties and constituents at
<br /> water-qualitg station 07104000 ~onument Creek at Pikeview
<br /> (ft3/s, cubic feet per second; ,",S/cm, micros emens per centimeter at 25 degrees Celsius; oc, degree Celsiusj mglL, milligrams per literj
<br /> ",giL, micrograms per liter; 1100 mL, colon es per 100 milliliters; ---, no stream standard; E, estimated using methods described by
<br /> He lse I and Cohn (1988); <, less than; -- , nsufficient data]
<br /> Numbe r Number Period Water-
<br /> Property or constituent Units of of of Hean Standard Hinimum Lower Hedian Upper Hax imum quality
<br /> values censored record deviation quartile qua rt ile stand-
<br /> values (water year) ard!
<br /> Instantaneous streamflow ft3/s 249 0 1976-88 33 52 1.1 8,8 17 35 410
<br /> Specific conductance ,",S/cm 243 0 1976-88 335 88 105 285 340 398 690
<br /> pH standard 147 0 1976-88 7,8 0,4 6.8 7,6 7.9 8.1 8.7 6.5-9.0
<br /> Water temperature oc 244 0 1976-88 12.2 8,6 0.0 5.0 12.0 19.0 30,0
<br /> Dissolved oxygen mg/L 146 0 1976-88 9,2 2,0 5.6 7,5 8.8 10.9 15,0 5.0
<br /> Hardness as calcium maIL IS 0 1976-82 130 31 81 93 120 160 170
<br /> carbonate
<br /> Dissolved calcium maiL 15 0 1976-82 40 10 25 30 40 50 5S
<br /> Dissolved magnesium maiL 15 0 1976-82 6,1 1.3 4,1 4,5 6,3 7.3 8,0
<br /> Dissolved chloride mg/L 104 0 1977-88 13 7,2 0,20 9,6 12 15 69 250
<br /> Dissolved sulfate maiL 99 0 1977-88 55 19 18 41 56 67 100 250
<br /> Suspended solids m8/L 136 3 1977-88 271 E 466 E <1 54 131 257 3,980
<br /> Nitrite plus nitrate as maiL 150 0 1976-88 1.3 0,67 0,18 0,70 1.3 1.8 2.9 10
<br /> nitrogen
<br /> Total ammonia as nitrogen mg/L 150 23 1976-88 0,26 E 0,50 E <0.01 0,02 0,08 0.23 3,3
<br />N Un-ionized ammonia as mg/L 124 0 1976-88 0,0039 0,0071 0,000020 0.00057 0.0013 0.0036 0.036 0,1
<br />~ nitrogen
<br /> Total alllllonia plus organic mg/L 99 0 1976-88 1.2 0.95 0,20 0,60 1.0 I.S 6,6
<br /> ni trogen
<br /> Total organic nitrogen as maiL 9S 0 1976-88 0,96 0,76 0.19 0.56 0,80 1. 10 6.40
<br /> nitrogen
<br /> Total phosphorus maiL 6S I 1976-82 0,24 E 0,19 E <0.01 0,11 0.16 0,31 0.86
<br /> Total cadmium ~g/L 102 74 1976-88 0,72 E 1.2 E <1 0,3 E 0,5 E I 7 2
<br /> Total recoverable copper ~g/L 103 2 1976-88 11 E 10 E <1 S 8 13 79 7
<br /> Dissolved iron ~a/L 81 10 1976-88 81 E 380 E <10 20 30 50 3,400 300
<br /> Total recoverable iron ~a/L 110 0 1976-88 6,500 9,700 150 2,400 3,600 7,000 86,000 8,200
<br /> Total recoverable lead ~a/L 102 16 1976-88 13E 19 E <I 3 8 14 140 30
<br /> Dissolved manganese ~g/L 84 14 1981-88 24 E 21 E 6 10 20 30 160 50
<br /> Total recoverable manganese ~a/L 110 0 1976-88 190 230 20 80 130 200 1,900 1,000
<br /> Total recoverable nickel ~g/L 23 2 1981-83 4 E 3 E <1 3 4 6 15 100
<br /> Total selenium ~g/L 26 2 1976-83 2 E 1 E <I I 2 2 3 10
<br /> Total recoverable zinc ~g/L 107 4 1976-88 60 E 70 E 2 30 40 70 520 60
<br /> 5-day biochemical oxygen mg/L 127 0 1976-88 2,8 2,8 0.1 0.9 1.9 4,0 15
<br /> demand
<br /> Total coliform bacteria /100 mL .9 0 1985 60 1,600
<br /> Fecal coliform bacteria /100 mL 94 10 1976-88 370 E 1,100 E <1 8 35 170 7,900 2,000
<br /> Fecal streptococcus bacteria 1100 mL 48 0 1985-88 400 370 43 100 230 630 1,800 ....
<br /> 1For stream segment 7 (Colorado Department of Health, 1989),
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