Provo, UT Environmental Rules: Erosion Control (2026)

160(3)(d), any slope exposed or created during development in the Critical Hillside Overlay Zone must be landscaped or revegetated with dryland trees and plant material, and the new vegetation has to equal or exceed the erosion-control characteristics of the original ground cover, not just look similar. 160(3)(e) adds a stricter rule for the steepest cuts: on human-made slopes of 25% grade or greater, the developer must use plant materials with deep rooting characteristics specifically to minimize erosion and reduce surface runoff, and each planting basin must be kept level with a raised berm around the base of the plant to retain moisture while roots establish.

110, which require any detention basin or storm and erosion control facility to be shaped like a naturally occurring depression rather than a geometric pit, covered with a native grass mixture that needs no regular mowing or fertilizing, and planted with drought-tolerant, firewise vegetation drawn from the site's approved fire protection plan. 160(3)(f) lets contractors stockpile topsoil removed during construction for later use on the very cut-and-fill slopes these erosion rules cover.