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N <br />w <br />Table <br />S. -- Summary statistics for streamflow and selected water - quality properties and <br />Air <br />constituents at <br />Force Academy <br />water <br />- quality <br />station 07103780 <br />monument Creek above North Gate Boulevard at U.S. <br />[ft /s, cubic feet per second; <br />NS /cm, microsiemens per <br />centimeter at <br />25 degrees <br />Celsius; <br />standard; <br />°C, degree <br />E, estimated <br />Celsius; <br />using <br />mg /L, milligrams per <br />methods described <br />liter; <br />by <br />pg /L, micrograms per liter; <br />/100 mL, <br />colonies per 100 <br />milliliters; <br />data] <br />- - -, no stream <br />Helsel and Cohn (1988); <, <br />less than; <br />- -, <br />insufficient <br />Number <br />Number <br />of <br />Period <br />of <br />Mean <br />Standard <br />Minimum <br />Lower <br />Median <br />Upper <br />Maximum <br />Property or constituent <br />Units <br />of <br />censored <br />record <br />deviation <br />quartile <br />quartile <br />values <br />valu values <br />(water year) <br />24 <br />223 <br />40 <br />74 <br />1.4 <br />100 <br />4.8 <br />158 <br />11 <br />228 <br />22 <br />262 <br />261 <br />501 <br />Instantaneous streamflow <br />s <br />ft /s <br />93 <br />0 <br />1984 -88 <br />1984 -88 <br />Specific conductance PS/cm <br />rd <br />87 <br />58 <br />0 <br />0 <br />1984 -88 <br />8.0 <br />0.4 <br />7.1 <br />7.7 <br />7.9 <br />10.5 <br />8.2 <br />16.5 <br />9.3 <br />29. <br />PH <br />Water temperature <br />tanda <br />sta nda °C <br />88 <br />0 <br />1984 -88 <br />1984 -88 <br />10.3 <br />9.9 <br />8.1 <br />1.7 <br />0.0 <br />6.7 <br />2.0 <br />8.6 <br />9.9 <br />11.2 <br />14.2 <br />Dissolved oxygen <br />mg /L <br />59 <br />0 <br />5.0 <br />3.2 <br />6.2 <br />9.0 <br />13 <br />28 <br />Dissolved chloride <br />mg /L <br />61 <br />0 <br />0 <br />1984 -88 <br />1984 -88 <br />10 <br />22 <br />14 <br />11 <br />15 <br />19 <br />25 <br />110 <br />376 <br />Dissolved sulfate <br />mg /L <br />mg /L <br />56 <br />56 <br />1 <br />1984 -88 <br />44 E <br />61 E <br /><1 <br />8.2 <br />20 <br />0.50 <br />64 <br />0.80 <br />1. <br />Suspended solids <br />61 <br />0 <br />1984 -88 <br />0.60 <br />0.36 <br />0.10 <br />0.30 <br />Nitrite plus nitrate as <br />mg /L <br />nitrogen <br />mg /L <br />61 <br />3 <br />1984 -88 <br />0.85 E <br />1.2 E <br /><0.01 <br />0.15 <br />0.0028 <br />0.40 <br />0.0082 <br />1.05 <br />0.013 <br />0.06 <br />Total ammonia as nitrogen <br />mg /L <br />55 <br />0 <br />1984 -88 <br />0.011 <br />0.012 <br />0.00035 <br />Un- ionized ammonia as <br />0.40 <br />0.82 <br />1.3 <br />2.0 <br />8.1 <br />nitrog <br />/L <br />56 <br />0 <br />1984 -88 <br />1.7 <br />1.4 <br />Total ammonia plus organic <br />mg <br />nitrogen <br />0 <br />1984 -88 <br />0.87 <br />0.51 <br />0.10 <br />0.57 <br />0.78 <br />1.1 <br />3. <br />Total organic nitrogen as <br />mg /L <br />54 <br />-- <br />-- <br />3 <br />nitrogen <br />Ng /L <br />55 <br />45 <br />1984 -88 <br />-- <br />-- <br /><1 <br />-- <br />3 <br />4 <br />6 <br />11 <br />Total cadmium <br />Total recoverable copper <br />/L <br />56 <br />0 <br />1984 -88 <br />1984 -88 <br />5 <br />120 E <br />2 <br />100 E <br />1 <br /><10 <br />50 <br />90 <br />160 <br />580 <br />Dissolved iron <br />p g /L <br />56 <br />56 <br />1 <br />0 <br />1984 -88 <br />1,400 <br />1,400 <br />310 <br />620 <br />920 <br />2,000 <br />6,400 <br />Total recoverable iron <br />Ng /L <br />p g <br />14 E <br /><1 <br />l E <br />2 E <br />5 <br />100 <br />Total recoverable lead <br />pg /L <br />56 <br />56 <br />29 <br />0 <br />1984 -88 <br />1984 -88 <br />5 E <br />73 <br />41 <br />10 <br />40 <br />70 <br />90 <br />160 <br />250 <br />2,200 <br />Dissolved manganese <br />Ng /L <br />/L <br />56 <br />0 <br />1984 -88 <br />160 <br />280 <br />50 <br />90 <br />E <br />110 <br />20 <br />30 <br />13 0 <br />Total recoverable manganese <br />pg <br />56 <br />16 <br />1984 -88 <br />21 E <br />21 E <br /><10 <br />10 <br />Total recoverable zinc <br />pg /L <br />1.8 <br />1.1 <br />2.7 <br />4.0 <br />5.9 <br />8 4 <br />5 -day biochemical oxygen <br />mg /L <br />44 <br />0 <br />1984 -88 <br />4.3 <br />-- <br />470 <br />demand <br />Total coliform bacteria <br />/100 ML <br />7 <br />0 <br />1985 -88 <br />-88 <br />-- <br />51 E <br />-- <br />73 E <br />13 <br /><2 <br />-- <br />8 <br />-- <br />2 4 <br />68 <br />400 <br />Fecal coliform bacteria <br />/100 ML <br />44 <br />3 <br />0 <br />1985 <br />1985 -88 <br />150 <br />200 <br />2 <br />35 <br />64 <br />160 <br />790 <br />Fecal streptococcus <br />/100 ML <br />47 <br />bacteria <br />Water - <br />quality <br />stand - <br />ardl <br />6.5_9.0 <br />5.0 <br />250 <br />250 <br />10 <br />0.1 <br />2 <br />7 <br />300 <br />8,200 <br />30 <br />50 <br />1,000 <br />60 <br />2,000 <br />1� <br />N <br />1 For stream segment 7 (Colorado Department of Health, 1989). <br />