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This project site has been returned to the land owner, who will probably continue to farm it. General water quality conditions are expected to remain much the same as during and . before project construction, Nitrate concentrations may change depending on land use, fertilizer application, or other practices. Project data can be retrieved from STORET by contacting your local EP A Regional Office, STORET location codes can be acquired from the project sponsor. Economic Evaluation Total project costs were $678,048, which included $549,668 in costs to construct, operate, and monitor the demonstration site, and $128,380 in Federal adminstrative costs, The sponsor's share of the project was $135,610, Site construction cost (costs for instruments and equipment, monitoring well installation, construction, and associated labor and travel) was $116,228, Monitoring! operations costs (costs for analysis, report production, and associated labor and travel) totaled $343,083, of which 572,428 was spent in water quality analytical charges, Costs for operating the site were negligible (about $30 for seed plus fuel) and donated by the owner. Small differences in time and fuel required to farm around the wheatgrass barriers versus farming without the barriers were not monitored, The recharge plot captured about 4 acre-feet more water than did the control plot during . the project, If the only costs for recharge are to construct the barriers, the cost was about $8 an acre-foot. However, if all costs are considered, the water cost about $170,000 per acre-foot. Conclusions The snow capture barriers on the demonstration site showed that a measurable amount of additional water could be accumulated on recharge zones and that long-term development of snow capture barriers would makE! a c1,ifferE!nJ;E! in the a_mount of recharge available to the Turner-Hogeland Aquifer. Based on this study, recharge to the aquifer could be increased as much as 15 percent over natural infiltration using snow management techniques. Availability of land with direct hydraulic connection to the aquifer would be a primary limiting factor to widespread implementation of snow management. The demonstration site showed that early spring recharge from snowmelt commonly occurs and, that during 3 of the 6 years that the project operated, water levels were directly influenced by snowmelt. Moisture content at the base of the soil zone increased almost every winter during the project, indicating that water accumulating on the land surface as snow infiltrated the land surface, Water level response in wells appeared to be triggered by September through April precipitation amounts that were greater than about 4 inches, Examination of long-term precipitation records for Havre show that winter-time precipi- tation (September through April of the following year) amounts of at least 4 inches have a occurred since the winter of 1961-62 about 80 percent of the time, WI 6