In addition to roadway and shoreline scenic units, the scenic quality of certain recreation sites and bike trails are also subject to scenic threshold standards. The threshold standard for "Other Areas" addresses three general types of scenic resources: views of the lake and natural landscape, views of natural features, and visual quality of built facilities. Tracking these values measures how changes over time in land use and development affect scenic resources and how the recreation facilities' aesthetics affect the visual quality of the area. Factors that affect this standard are adjacent development that can be viewed from the sites and upkeep and maintenance of the facilities themselves. The Environmental Improvement Program's priorities include upgrading recreation facilities to better handle visitation capacity, improve the visitor experience, and decrease environmental impact.