streambank vegetation, and water tem- 

 5 perature; and, 



indirectly, impacts to fishing pressure from 

 changes in access. 



In order to address these issues, the following 

 parameters are analyzed by alternative: 



Water Yield - Existing and anticipated 



equivalent clearcut acres (ECA) by 



subwatershed. 



Fine Sediment Production - Miles of new 



road construction, reconstruction, and 



obliteration. 



Large Woody Debris Recruitment - Acres 



of streamside management zone (SMZ) 



harvesting. 



LAKES 



Lakes within the Beaver Lake Pproject area are 

 formed in remnant glacial depressions, or 



discharge normally occurs in areas where the 

 water table or aquifer is close to the land 

 surface. It can be assumed that the analysis 

 area is most likely dominated by a series of 

 local flow systems that have their recharge 

 areas in the basin divides and their discharge 

 areas in the valley bottoms and pothole lakes. 

 Several flow systems are most likely present 

 due to topographic relief in the watershed that 

 forms undulations in the water table. 



Several State-leased cabinsites are located 

 along the shoreline of Beaver Lake. Impacts to 

 lakes from shoreline development include loss 

 of riparian habitat and near-shore (littoral) 

 vegetation, increased nutrient loading from 

 septic drain fields, and the potential increase 

 in primary productivity that may affect the 

 lake's water quality. At this time, develop- 

 ment along Beaver Lake is considered an 

 insignificant water-quality issue. 



TABLE III-ll - PHYSICAL LAKE CHARACTERISTICS FOR THE BEAVER LAKE PROJECT AREA 



"potholes". Potholes in the Beaver Lake 

 Pproject area were formed as ice detached 

 from the receding glaciers at the end of the 

 Pleistocene Epoch and were partially buried in 

 glacio-fluvial deposits. With the exceptions of 

 Beaver and Boyle lakes, the lakes within the 

 analysis area are considered lentic (closed) 

 systems that do not receive measurable 

 amounts of water or sediment from surface 

 sources, such as streams and overland flow. 

 Inputs to these lakes include direct precipita- 

 tion, groundwater exchange, and overland 

 flow, while outputs include loss to evapotrans- 

 piration and groundwater. In general, water 

 recharges the groundwater in the upper- 

 forested portions of the watershed, while 



LAKE FISHERY 



There is limited historic lake fishery data for 

 the analysis area. DFWP poisoned Dollar and 

 Murray lakes in the fall of 1997 to eliminate 

 undesired exotic species. Dollar Lake was 

 restocked with cutthroat trout. Murray Lake 

 was planted with both rainbow trout and 

 cutthroat trout. 



Little Beaver and Beaver lakes currently 

 support kokanee salmon and rainbow trout. 

 Due to the shallow nature of Woods and 

 Rainbow lakes, past attempts at stocking have 

 been unsuccessful. Winter fish-kills are result- 

 ing from winter freeze-outs. 



m-30- 



-Stillwater State Forest • Beaver Lake Timber Sale Project 



