Colorado River Mile System, Tenths of Miles
收藏DataONE2016-10-29 更新2024-06-26 收录
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This coverage contains points representing tenth of miles in the GCMRC river mile system. The points fall along the centerline of the Colorado River from Glen Canyon Dam to the headwaters of Lake Mead. The points were generated from exported nodes from the "centerline" tenth mile route. The GCMRC river mileage was cross-checked with the traditional river guides and always fell within one mile of the guides, usually cooresponding within a half mile. River Mile 0 was measured from the USGS concrete gage and cablewa at Lees Ferry with negative river mile numbers used in Glen Canyon and positive river mile numbers downstream in Marble and Grand Canyons as per the Colorado River Compact of 1922.
创建时间：
2016-10-29
