of both streams indicate a low level of ionic 

 material. Bicarbonate and calcium comprise 

 the bulk of the dissolved chemical load of the 

 constituents measured. The pH values of both 

 streams v/ere usually about 7.5, but these val- 

 ues became slightly acid during the spring 

 high flow period. 



There appears to be a general relationship 

 between solute concentrations and discharge. 

 Except for nitrate and potassium, the concen- 

 tration of each constituent decreased during 

 the spring high flow period and increased gen- 

 erally into the summer low flow period. Ni- 

 trate concentrations were very low through- 

 out the measurement period, seldom exceed- 

 ing 0.1 p. p.m. on either stream. 



A more complete analysis was made on wa- 

 ter samples collected in mid-July both near 

 the gages and at headwater springs in each 

 watershed. These analyses included tests for 

 trace elements, heavy metals, biochemical de- 

 mand (BOD), and total coliform bacteria; re- 

 sults are listed in table 10 of the Appendix. 

 The tests indicated almost no trace elements 

 and only small concentrations of iron, zinc, 

 manganese, and copper. About 60 percent of 

 the total dissolved load of each stream is con- 

 tributed by bicarbonate and 98 percent by 



the five contributors: bicarbonate, calcium, 

 sodium, sulfate, and chloride. 



Bacteriological Quality 



Bacteriological analysis of samples col- 

 lected in mid-July indicated that total coli- 

 form bacteria counts were very low, ranging 

 from less than 3 per 100 ml. at a spring on the 

 West Branch to 120 per 100 ml. at the East 

 Branch stream, gage. 



Additional water samples were collected 

 and analyzed by research personnel from 

 Utah State University at about 2-week inter- 

 vals from mid-July to mid-October and this 

 sampling is continuing. Bacteriological analy- 

 sis included: total coliform, fecal coliform, 

 and fecal streptococcus. There is insufficient 

 information, at present, to indicate relation- 

 ships or trends. Counts were very low and 

 variable (0 to 250 per 100 ml.) except for a 

 single sampling date in mid-August when a 

 very large increase in all counts was noted 

 (total coliform and fecal streptococcus, both 

 exceeded 1,000 counts per 100 ml.). This water 

 sample was taken immediately after a 1.88- 

 inch rainfall and the high counts are attrib- 

 uted to surface runoff and flushing of beaver 

 dams and stream channels. 



24 



