Tenmile Creek was found to support a \ery good brook trout fishery 

 relative to most other Mount Haggin streams, lumbers of catchable fish 

 brook trout condition, average weight and biomass were well above average 

 for Mount Haggin streams. 



4. FLOW RECOMMENDATIONS 



Cross sectional data were collected from a 266 foot riffle-run sequence 

 located approximately at stream mile .3 (T3N, R12W, Sec 34B). Five cross 

 sections were placed within this sequence. The WETP program was calibrated 

 to field data collected at flows of 44.0, 18.4 and 5.9 cfs. 



The relationship between wetted perimeter and discharge for a composite 

 of three riffle cross sections is shown in Figure 11. Lower and upper 

 inflection points occur at 4 and 6 cfs. Based on an evaluation of the 

 existing fishery, recreational use potential and contribution to downstream 

 water quality and quantity in the Big Hole River, a flow of 6 cfs is 

 recommended for the low flow period (July 1 - April 30). Due to a lack 

 of long term flow data, recommendations for the high flow period (May 1 - 

 June 30) cannot be derived. 



63 



