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. , . . t that do not have sufficient coverage because of existing water-distribution networks or insufficient homeowner wells. The ground-water levels are currently being made by USGS field personnel. This effort will continue as the water-level measurement network increases. All wells used for this study have been located using a portable Global Positioning System (GPS). Information from the GPS unit allows the well to be located in the GIS representation of the area. To supplement the ground-water data, continuous water-level monitors could be installed on wells which are not currently used for water supply. It is recommended that water-level monitors be installed on three existing USGS monitoring wells in the basin. A continuous record of water- level measurements provides important information about the dynamics of the ground-water system. Water-quality samples will be collected at the outflow of each Turkey Creek subbasin and at several locations downstream (prior to the passage through the Dakota Hogback) to determine if ground-water return is affecting the water-quality of the stream. Preliminary sampling with a Hach kit (nitrate) has indicated several areas of possible concern. These samples are most important during low flow when ground-water return flows tend to be a large percentage of the streamflow. The findings of the sampling effort will be presented in a data report. (5) Prepare a preliminarv model of the around-water system usina the USGS Precipitation-Runoff Modelina System (PRMS). The PRMS model is a modular-design, physical-process watershed model used to evaluate the effects of various combinations of precipitation, climate, and land use on watershed response. The model has been modified to incorporate information from NexRad radar to improve the precipitation input to a watershed. The model is being calibrated along the Front Range of Colorado and data from the Turkey Creek basin will be used refine the model. Because many of the initial parameters for Jefferson County have already been incorporated into the model, a refined model of the Turkey Creek basin should not require large amounts of additional work. The ground-water module for the model will be updated for the complex fractured bedrock system found in the Turkey Creek basin (this effort would extend into FY1999 and FY2000). ' (6) Provide the public with proaress reports usina USGS fact sheets and posters. A USGS fact sheet is a 2 to 6 page illustrated report written for the general public. Fact sheets and posters will be used to inform the public of the pilot study findings. The fact sheets can be provided as written material or accessed on the Internet. (7) Beqin a preliminarv evaluation of the fracture svstem in the Turkey Creek basin. Field observations will be made while water-level measurements and water-quality samples are collected to note obvious surface indications of fracture zones. The fractures will be located using the GPS unit and added to the GIS coverage of the area. Previous fracture work done in the area by the USGS Geological Division will be reviewed and efforts wi/I be made to involve them in the pilot study. Geologic Division has agreed to provide preliminary information about the fracture system using portable equipment. Well logging, tracer tests, and aquifer testing may be required to better define the fracture system (these efforts will be addressed in FY1 999). (8) Setup the database to be used for the around-water studv. A relational database will be used (Access/Oracle) that can be linked to the Internet. The availability of the data on the Internet will allow the various cooperators and the public to access the data when needed. The website will be designed to allow people to select specific sites to obtain historical and current data about the area. . Existing well data, well data collected in the field, weather data, water-quality data, 6