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<br />c Dissolved Oxygen
<br />
<br />Little reliable dissolved oxygen data is available for the Encampment.
<br />. Although oxygen levels can be critical for aquatic life, experience
<br />with similar streams inditates that more than adequate levels of dis-
<br />solved oxygen are found yearlong in the Encampment. Levels will remain
<br />near or even above saturation levels, somewhere around 9.0 - 10.0 mg/l.
<br />'The lower limit for trout ~roduction is 6.0 mg/l.
<br />
<br />. d. Other Chemical Parameters
<br />
<br />Table 2 is a summary of six chemical analyses, over a two year period,
<br />for a number of locations ih the Upper Encampment drainage. Th~ data
<br />indicates low concentrations of all constituents - well within existing
<br />'drinking water standards.
<br />
<br />V. BACTERIOLOGICAL PARAMETERS
<br />
<br />Existing bacteriological data is very 1 imited and inconclusive.
<br />The data, and the low level of impacts in the drainage, suggest that
<br />it easily meets the Colorado State Standards for Class BI Fisheries.
<br />In addition, it meets established Public Water Supply standards; i.e.
<br />it is sui tab 1e for public \Ia tel' supply if treated. Based on exper-
<br />ience with similar streams, backgl"ound ("natural) bacteria levels are
<br />probably high enough to exceed safe levels for drinking without treat-
<br />ment. Livestock grazing probably increases the bacteria levels during
<br />low flow periOdS qf the summer, There are likely n0 measurable indi-
<br />cations of human i-mpact on the hacteria levels, since human use is
<br />limited to occassional hiket's and fishermen.
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