USACE CWMS - White River Watershed

The Corps Water Management System (CWMS) includes four interrelated models to assist with water management for the basin:

- GeoHMS (Geospatial Hydrologic Modeling Extension)
- ResSIM (Reservoir System Simulation)
- RAS (River Analysis System)
- FIA (Flood Impact Analysis)

The White River Basin contains 27,818 square miles: about 38 percent is in Missouri and 62 percent is in Arkansas. The fan-shaped basin is about 250 miles long in a northerly direction and varies in width from 210 miles near the Missouri-Arkansas State line to about 50 miles near the mouth of the river. Approximately three-fourths of the basin is in the Ozark highlands where the topography consists of rough dissected plateaus rugged hills, and rolling woodland. The eastern escarpment of the Ozark Mountains extends southwestward across the basin from the vicinity of Poplar Bluff, MO; along the west side of the Black River to Batesville, AR, on the White River; and thence to the vicinity of Searcy, AR, in the little Red River Basin. East of the escarpment, the basin lies in the flat terrain of the Gulf Coastal Plain. The eastern watershed divide between the White and St. Francis Rivers is formed by Crowley’s’ Ridge, which extends in a north-south direction and rises about 150 feet above the floodplain.

陆军水管理系统（Corps Water Management System，简称CWMS）包含四个相互关联的模型，旨在协助流域的水资源管理：

- 地理水文模型扩展（GeoHMS，Geospatial Hydrologic Modeling Extension）
- 蓄水池系统模拟（ResSIM，Reservoir System Simulation）
- 河流分析系统（RAS，River Analysis System）
- 洪水影响分析（FIA，Flood Impact Analysis）

怀特河流域面积达27,818平方英里：其中约38%位于密苏里州，62%位于阿肯色州。该扇形流域在北方方向上长约250英里，宽度从密苏里-阿肯色州界附近的210英里变化至河流入海口附近的约50英里。流域的四分之三位于奥扎克高地，地形由崎岖分割的高原、崎岖的山丘和起伏的林地组成。奥扎克山脉的东缘从密苏里州波皮兰布附近向西南方向延伸至流域内，沿着布莱克河的西侧至阿肯色州的贝茨维尓，再沿怀特河至小红河流域附近的塞尔斯基。东缘以东，流域位于墨西哥湾沿岸平原的平坦地形上。怀特河与圣弗朗西斯河之间的东部流域分水岭由克劳利山脉形成，该山脉南北走向，海拔约150英尺高于洪水平原。