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2.5.6 Division of Mined Land Reclamation The Division of Mined Land Reclamation is concerned with flooding as it relates to successful operation and reclamation of mining operations. The interaction of the mining and reclamat ion operations with surface drainage is cons idered during the review of mine permit appplications, inspections of ongoing operations, and evaluation of fin,3l reclamation. The major flood plain problems and pot.ential hazards associated with mining are located primarily in urban areas where gravel is mined along major drainages. Adverse affects of mining on flooding occur less frequently in rural and mountainous areas, due to the sparse population. The Mined Land Reclamation Division, however, is concerned with the re-eE:tablishment of stable geomorphic landforms and drainage regimes in all areas of mining. During the review proces:; or after inspection when a major flood issue arises, the Division may refer thE! problem to the Water Conservation Board staff for revie>r. Typical problems include tl1e location of large graVEd stockpiles or berms related to gravel mining operations within the flood plain and their affect on flooding. The Division derives its authorities for the minerals program from 34-32-101 et se51.. and for the coal program from 34-33-101 et seq. Toe authorities under the minerals program are quite general with regard to surface drainage control whereas, the coal program authorities are more specific. Under the coal program operators are required to prepare runoff calculations for the volume of water in the 1 O-year, 24-hour storm and the peak flows for the 2S-year, 24-hour storm. 2.5.7 State Land Board The State Land Board administers about 4 million acres of land. Most of this land is leased for grazing, growing agr icultural crops, and pumping oil. The main interest of the Land Board is to assure that, as a minimum, the income from any property will remain the same during development and that, as the property improves in value, the Land Board will receive a share of the appraised value. NOnE! of thE~se uses have much significance in terms of floodplain management. However, the Land Board is just beginning to lease some land in urban or urbanizing areas, Clearly some of this land will include floodplain areas. The most likely places for such devel- opment will be the front range: area and the western slope energy and recreation development areas. The leases on these properties are long term leases where homeowners would own their homes and lease the land on which they sit. 59