Rainfall-runoff modeling can also be used to estimate peak discharge and usually also a design hydrograph, or an estimate of the flow rate past a certain location over a period of time. Top of Page. The discharge measurement. Maximum inflow exceedance of design flood discharge. The highest value of the stage or discharge attained by a flood; thus, peak stage or peak discharge. Through the use of flood-routing techniques, all observations of dis­ charge and other hydrologic events in a river basin may be combined The Kern River, originally Rio de San Felipe, later La Porciuncula, is a river in the U.S. state of California, approximately 165 miles (270 km) long.It drains an area of the southern Sierra Nevada mountains northeast of Bakersfield.Fed by snowmelt near Mount Whitney, the river passes through scenic canyons in the mountains and is a popular destination for whitewater rafting and kayaking. BASINS includes a variety of databases that can be used for watershed-based analysis and modeling. The stage at which the river will overflow its banks is called bankfull stage or flood stage. Once the river’s discharge exceeds its bankfull discharge 1, the levees can be burst by the high pressure of the water. (Leopold and Maddock, 1954, p.112.) Flood, maximum probable. Databases contain information from a wide range of national sources, and are selected on the relevance to environmental analysis, national availability, and scale. Similarly the discharge associated with a flood with a recurrence interval of 50 years (the 50-year flood) would have a discharge of about 21,000 cubic feet per second. Discharge is plotted on the Y-axis, and dates are plotted on the x-axis. For example, the graph below is a hydrograph of the Mississippi River at St. Louis, Missouri during the time period of the 1993 flood. Data. During the 1950 Red River flood the Red River reached its highest level since 1861 resulting in a major flood from April to June turning 600 mi/s (970 km/s) of Manitoba farmland into a vast inland sea. The Assiniboine River (/ ə ˈ s ɪ n ɪ b ɔɪ n /; French: Rivière Assiniboine) is a 1,070-kilometre (660 mi) river that runs through the prairies of Western Canada in Saskatchewan and Manitoba.It is a tributary of the Red River.The Assiniboine is a typical meandering river with a single main channel embanked within a flat, shallow valley in some places and a steep valley in others. Discharge is the volume of water moving down a stream or river per unit of time, commonly expressed … This would be called the 10-year flood. The Stanislaus River is a tributary of the San Joaquin River in north-central California in the United States.The main stem of the river is 96 miles (154 km) long, and measured to its furthest headwaters it is about 150 miles (240 km) long. The ratio of the maximum inflow during an extreme flood event to the planned high water flow was calculated. Flood peak. For the data on the Red River, above, the discharge associated with the 10-year flood is about 12,000 cubic feet per second. Approximately 107,000 people were evacuated from the area. The largest flood for which there is any reasonable expectancy in this climatic era. The Murray River (in South Australia: River Murray) (Ngarrindjeri: Millewa, Yorta Yorta: Tongala) is a river in south-eastern Australia.It is Australia's longest river at 2,508 km (1,558 mi) extent. of discharge during such flood periods is generally limited by the short duration of the flood and the inaccessibility of certain stream sites. The data were collected from 46 flood events at 34 dams for which data on maximum inflows during flood events were available. Levees increase the height of the river’s channel though, so the bankfull discharge is increased and it becomes more difficult for the river to flood. Determining discharge from stage requires defining the stage-discharge relationship by measuring discharge at a wide range of river stages. On May 18, the Red River reached 30.3 feet above normal. Discharge-frequency analysis approaches can be used to estimate peak discharge, or the maximum flow rate of water that passes a certain location during a flood.

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