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water - quality data also were evaluated for seasonal, temporal, and spatial <br />variations. The scope of the report included reviewing previous reports on <br />the two basins and assembling and evaluating streamflow and surface- water- <br />quality data collected from 1975 through 1983. Previous reports of surface <br />water and surface -water quality of Fountain Creek basin, including Monument <br />Creek basin, that were reviewed and are pertinent to this report include: <br />Klein and Bingham (1975) and Livingston and others (1975, 1976a, 1976b). <br />Water - quality constituents monitored during 1975 through 1983 included: <br />(1) Water temperature, specific conductance, pH, and dissolved oxygen (by <br />personnel onsite); (2) 5 -day biochemical oxygen demand (BOD O and fecal <br />coliform bacteria (by U.S. Geological Survey personnel in the Pueblo sub- <br />district office); and (3) suspended solids, dissolved chloride, dissolved <br />sulfate, total ammonia, total nitrite plus nitrate, total- recoverable cadmium, <br />dissolved chromium, dissolved - hexavalent chromium, total - recoverable copper, <br />total - recoverable iron, dissolved iron, total - recoverable lead, total - <br />recoverable manganese, dissolved manganese, total - recoverable nickel, total <br />selenium, total - recoverable silver, and total - recoverable zinc (by the U.S. <br />Geological Survey Denver Analytical Laboratory). <br />Acknowledgments <br />The author appreciates the time, information, and suggestions provided <br />by Gene Y. Michael and Dennis T. Cafaro, Colorado Springs Department of <br />Utilities; Robert T. Schrader, Security Water and Sanitation District; <br />Donald C. Lohrmeyer, Widefield Homes Incorporated; Edmond W. Hakes and <br />Elmer J. Wahlborg, Stratmoor Hills Water and Sanitation District; F. Stuart <br />Loosley, Cherokee Water District; and Mary Barber, U.S. Department of the <br />Army. <br />STREAM CLASSIFICATIONS AND WATER - QUALITY STANDARDS <br />Stream classifications in Colorado are based on categories of beneficial <br />use which include class 1 recreation, class 2 recreation, class 1 cold- or <br />warm -water aquatic life, class 2 cold- or warm -water aquatic life, domestic <br />water supply, and agricultural categories. Streams categorized for recre- <br />ational use are intended for human uses such as swimming, wading, or boating. <br />Class 1 recreation streams are suitable for prolonged full -body contact sports <br />such as swimming. Class 2 recreation streams are suitable for wading and <br />fishing but not for full -body contact sports. Streams categorized for class 1 <br />aquatic -life use either provide or could provide a habitat sufficient to <br />protect and maintain a wide variety of biota, including sensitive species. <br />Streams categorized for class 2 aquatic -life use are primarily limited by flow <br />and streambed characteristics in their ability to maintain a variety of biota. <br />Because temperature affects the aquatic community, cold- and warm -water <br />aquatic -life classifications were established. Streams that have a cold -water <br />aquatic -life classification have temperatures that rarely exceed 20 °C; <br />whereas, streams that have a warm -water aquatic life classification frequently <br />have temperatures that exceed 20 °C. Streams categorized for domestic water - <br />supply use are suitable or intended to be suitable as potable water supplies. <br />The agricultural -use category is for streams that are suitable for irrigation <br />of crops usually grown in Colorado and for streams that are not detrimental <br />4 <br />