USACE CWMS - Kansas 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 Kansas River watershed rises in eastern Colorado with portions of the Republican and Smoky Hill River drainages in that state. The Smoky Hill and Republican Rivers along with their tributaries flow generally eastward across western Kansas to Junction City, KS where they join to form the Kansas River. From Junction City, the Kansas River flows eastward until it joins the Missouri River at Kansas City. Other major tributaries to the Kansas River include the Big Blue, Delaware, and Wakarusa Rivers. Average annual precipitation in the basin varies from less than 16 inches in eastern Colorado to 39 inches at Kansas City. Floods generally occur due to convective storms in the spring and summer months, however large floods can be caused by extended wet periods.

the Smoky Hill River below Kanopolis Dam. Junction City sits at the confluence that forms the Kansas River. Fort Riley, a prominent army post is located near Junction City, and three levee systems protect portions of the post from flooding from the Republican and Kansas Rivers. Downstream, large communities along the Kansas include Manhattan, Topeka, the state capital, Lawrence and Kansas City. Each of these cities contain areas protected by major levees.

军团水资源管理系统（Corps Water Management System，简称 CWMS）集成了四个相互关联的模型，旨在辅助该流域的水资源管理：

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

堪萨斯河流域起源于科罗拉多州东部，共和河和斯莫基希尔河流域的部分区域亦位于该州。斯莫基希尔河和共和河及其支流大致向东横穿堪萨斯州西部，直至与堪萨斯市的交汇处汇合形成堪萨斯河。从交汇处出发，堪萨斯河继续向东流淌，直至与密苏里河在堪萨斯市汇合。堪萨斯河的主要支流还包括大蓝河、特拉华河和瓦卡卢萨河。该流域的平均年降水量从科罗拉多州东部的不足16英寸至堪萨斯市的39英寸不等。洪水通常在春季和夏季的对流风暴中发生，然而，长时间的湿润期也可能导致大洪水。

斯莫基希尔河在卡诺波利斯大坝下方。交汇处形成了堪萨斯河，附近的杰内森市是重要的军事基地，并有三道堤坝系统保护基地免受共和河和堪萨斯河的洪水侵袭。下游，堪萨斯河沿岸的大型社区包括曼哈顿、托皮卡（州首府）、劳伦斯和堪萨斯市。这些城市中均有由主要堤坝保护的区域。