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The 10-digit watersheds were delineated to be between 40,000 and 250,000 acres in size, and the 12-digit subwatersheds between 10,000 and 40,000 acres. [5] In addition to the hydrologic unit codes, each hydrologic unit was assigned a name corresponding to the unit's principal hydrologic feature or to a cultural or political feature within the ...
Subsequently every watershed along this coast is assigned a number using the Pfafstetter Coding System. This implies that the four largest watersheds are selected and receive numbers 2,4,6, or 8. The watersheds in between the large systems receive numbers 3, 5, and 7. Numbers 1 and 9 are used for the small watersheds on the edges of the strait.
A GIS watershed hydrology model link to evaluate water resources of the Lower Colorado River in Texas. In: Proceedings of Application of Advanced Information Technologies for the Management of Natural Resources. Sponsored by ASAE. June 17–19, 1993, Spokane, WA. Srinivasan, R. and J.G. Arnold. 1993. Basin scale water quality modeling using GIS.
Wolf Creek is a tributary of the North Canadian River in Texas and Oklahoma in the United States. It begins in Ochiltree County, Texas, and flows generally westward and northwestward through Lipscomb and Ellis counties into Woodward County, Oklahoma, where it joins the Beaver River to form the North Canadian River.
The North Canadian River is a river, 440 miles (710 km) long, [4] in Oklahoma in the United States. It is a tributary of the Canadian River, draining an area of 17,955 square miles (46,500 km 2) [5] in a watershed that includes parts of northeastern New Mexico and the Texas Panhandle.
A water resource region is the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units as part of the U.S. hydrologic unit system. This first level of classification divides the United States into 21 major geographic areas, or regions.
An example of a river system coded with the Pfafstetter coding system. The main tributary water basins are coded with even numbers 2-8, and the inter-basin regions with odd numbers. The code 0 is reserved for basins unconnected to the main stem. Coding continues recursively, with each new digit appended to the previously obtained code
The Beaver River is an intermittent river, 280 miles (450 km) long, [3] in western Oklahoma and northern Texas in the United States. It is a tributary of the North Canadian River, draining an area of 11,690 square miles (30,300 km 2) [4] in a watershed that extends to northeastern New Mexico and includes most of the Oklahoma Panhandle.