Big Molas Lake

A Jurisdictional Dam is a dam creating a reservoir with a capacity of more than 100 acre-feet, or creates a reservoir with a surface area in excess of 20 acres at the high-water line, or exceeds 10 feet in height measured vertically from the elevation of the lowest point of the natural surface of the ground where that point occurs along the longitudinal centerline of the dam up to the crest of the emergency spillway of the dam. For reservoirs created by excavation, or where the invert of the outlet conduit is placed below the surface of the natural ground at its lowest point beneath the dam, the jurisdictional height shall be measured from the invert of the outlet at the longitudinal centerline of the embankment or from the bottom of the excavation at the longitudinal centerline of the dam, whichever is greatest. Jurisdictional height is defined in Rule 4.2.19. The State Engineer shall have final authority over determination of the jurisdictional height of the dam.

行政管辖大坝系指能够形成超过100英亩英尺容量之水库的坝体，或在水位线之上形成超过20英亩的水库面积，或从地面自然表面最低点沿坝体纵向中心线垂直向上至应急溢洪道顶部的坝高超过10英尺。对于通过挖掘形成的水库，或当出口管道的底部设置在坝体下方地面自然表面最低点以下时，行政管辖高度应从坝体纵向中心线上的出口底部或从挖掘底部沿坝体纵向中心线测量，以较大者为准。行政管辖高度在规则4.2.19中定义。州工程师应拥有对坝体行政管辖高度的最终决定权。