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	Preliminary Performance Mapping The preliminary performance maps shown here are examples captured from the "Maps in Action" section. PIVOT's interactive sedimentation maps allow the user to select and view turbidity data from water quality monitoring stations. Sedimentation Maps in Action provide a starting point for exploring how the performance of CCMP sedimentation and erosion control strategies will be monitored.   How will managers determine if CCMP erosion and sedimentation control action plans are having a positive effect on the watershed? The picture at the right shows a variety of mapped sedimentation-related data. Managers will examine the relationships between this type of information and turbidity measurements at water quality monitoring stations in streams. Looking at locations of CCMP actions such as riparian planting and timber restoration and measuring the turbidity in streams will, over time, help show whether CCMP actions are sufficiently reducing sedimentation. Viewing the information in a spatial context through mapping can help managers make decisions about where further actions may be needed.   Turbidity data will be collected at sites downstream from erosion control activities over time so that the data can be examined for trends. The image to the left is the view looking downstream from the water quality station where these data were collected. Place your mouse over the station image to view a water quality data graph that gives a snapshot of turbidity at this site over a two-year period. Data from ambient water quality monitoring stations such as this one are collected by the Oregon Department of Environmental Quality (DEQ) and used to develop the Oregon Water Quality Index report. Further periodic turbidity monitoring data will be averaged to investigate long-term trends in this water quality indicator of excess sedimentation and erosion in the Tillamook watershed. This image and chart show ambient measurements of turbidity at this site during a two-year period, as seen in the Maps in Action section.   Assessing Performance in the Long-Term What other sedimentation and erosion influencing data layers might we like to view in relation to water monitoring sites? Urban development and agriculture are other factors that can contribute to excess sedimentation. Place your mouse over the larger, highlighted words in the list below to see additional data layers on the map at right. Adding layers to the map that show topography culverts zoning in relation to water monitoring stations could indicate where additional CCMP actions may be most effective. Tillamook County and the Tillamook Bay National Estuary Program maintain many GIS data layers, and more are being developed all the time. Visit this county Web site for a list of county GIS data layers. You can also view available data on-line! Image and Data Credits What's Next? Interactive performance maps