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<br />- <br /> <br /> Table 5.--Summary statistics for streamflow and selected water-quality properties and constituents at <br /> water-quality station 07103780 Monument Creek above North Gate Boulevard at u.s. Air Force Academy <br /> lfll/S. cubic feet per second; ~S/cm, microsiemeos per centimeter at 25 degrees Celsius; .C, degree Celsius; mg/L. milligrams per liter; <br /> ~B/L. micrograms per liter; /100 .1. colonies per 100 milliliters; ---I no stream standard; E, estimated using methods described by <br /> Helsel and Cobn (1988); <, less than; --, inaufficient data) 0 <br /> Number Period Water- ~ <br /> Number of of Standard Lower Upper quality .. <br /> Properly or cODstituent Units of censored record Hean deviation Hinimum quartile Hedian quartile Hax imum stand- I'\) <br /> values values (water year) acd1 <br /> Instantaneous str~amflow ft3/s 93 0 1984-88 24 40 1.4 4.8 11 22 261 <br /> Specific conductance ~S/C1O 87 0 1984-88 223 74 100 158 228 262 501 <br /> pH standard 58 0 1984-88 8.0 0.4 7.1 7.7 7.9 8.2 9.3 6,5-9.0 <br /> Water temperature .C 88 0 1984-88 10.3 8.1 0.0 2,0 10,5 16.5 29.0 <br /> Dissolved oxygen m8/L 59 0 1984-88 9.9 1.7 6.7 8.6 9,9 11.2 14.2 5,0 <br /> Dissolved cbloride m8/L 61 0 1984-88 10 5.0 3.2 6.2 9.0 13 28 250 <br /> Dissolved sulfate m8/L 56 0 1984-88 22 14 11 ]5 19 25 110 2S0 <br /> Suspended solids m8/L 56 1 1984-88 44 [ 61 [ <1 8,2 20 64 376 <br /> Nitrite plus nitrate .s !ag/L 61 0 1984-88 0,60 0,36 0.10 0.30 0.50 0.80 1.4 10 <br /> ni trogen <br /> Total ammonia as nitrogen m8/L 61 3 1984-88 0.85 [ 1.2 [ <0.01 0.15 0.40 1.05 7.1 <br /> Un-ionized ammonia as m8/L 55 0 1984-88 0,011 0.012 0.0003S 0.0028 0.0082 0.013 0.06 0.1 <br /> nitrogen <br />N Total ammonia plus organic m8/L 56 0 1984-88 1.7 1.4 0.40 0.82 1.3 2.0 8,1 <br />w nitrogen <br /> Total organic nitrogen .s m8/L 54 0 1984-88 0.87 0,51 0.10 0.57 0.78 1.1 3.4 <br /> ni trogen <br /> Total cadmium ~8/L 55 45 1984-88 <1 3 2 <br /> Total recoverable copper ~8/L 56 0 1984-88 5 2 1 3 4 6 11 7 <br /> Dinolved iron ~8/L 56 1 1984-88 120 [ 100 [ <10 50 90 160 580 300 <br /> Total recoverable iron ~8/L 56 0 1984-88 1,400 1,400 310 620 920 2,000 6,400 8,200 <br /> Total recoverable lead ~8/L 56 29 1984-88 5 [ 14 [ <1 1 [ 2 [ 5 100 30 <br /> Dissolved mangaDese ~8/L 56 0 1984-88 73 41 10 40 70 90 250 50 <br /> Total recoverable manganese ~8/L 56 0 1984-88 160 280 50 90 110 160 2,200 1,000 <br /> Total recoverable zinc ~8/L S6 16 1984-88 21 [ 21 [ <10 10 [ 20 30 130 60 <br /> 5-day biocbemical oxygen m8/L 44 0 1984-88 4.3 1.8 1.1 2.7 4.0 5.9 8,4 <br /> demand <br /> Total coliform bacteria /100 mL 7 0 1985-88 IJ 470 <br /> Fecal coliform bacteria /100 mL 44 3 1985-88 51 [ 73 [ <2 8 24 68 400 2,000 <br /> Fec~l streptococcus 1100 mL 47 0 1985-88 150 200 2 35 64 160 790 <br /> bacteria <br /> lFor stream segment 7 (Colorado Department of Healtb, 1989). <br />