North Dakota Water Science Center
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Mapping and the U.S. Geological Survey
The U.S. Geological Survey ensures access to basic geospatial data and earth science information for users worldwide. Through its National Mapping Program, the U.S. Geological Survey "provides geographic, cartographic, and remotely sensed information, maps, and technical assistance, and it conducts related research in response to national needs." Through the U.S. Geological Survey, public funds are used to provide inexpensive maps to benefit the public. Among these benefits are the maps visitors receive when they tour national parks and forests. Maps and mapping data are used by emergency response systems, law enforcement, resource managers, and environmental monitoring projects. Private businesses and individual citizens also use U.S. Geological Survey products in a variety of ways to support the growth of commerce and augment the quality of life (U.S. Geological Survey, 1997).
Missouri River Maps
The map shown below indicates the course of the Missouri River, in North Dakota, before the river was significantly altered by dams.
The geography of the Missouri River significantly changed between 1933, when construction of Fort Peck Dam in Montana was started, and 1966, when the last of six upper Missouri River dams, Big Bend in South Dakota, was completed. Construction of Garrison Dam in North Dakota began in 1947 and ended in 1954. Construction of Oahe Dam in South Dakota, which also affects the course of the Missouri River in North Dakota, began in 1948 and ended in 1962.
The maps shown below indicate the course of the Missouri River today.
The above map also gives an indication of the wetlands resources of North Dakota. Wetlands are ecologically and economically valuable to the State. Wetlands trap, remove, and transform waterborne constituents by processes such as sedimentation, plant uptake, microbial transformation, and soil adsorption. Attenuation of runoff from snowmelt and rainfall by wetlands reduces flows into streams and rivers and reduces the potential for bank and channel erosion. In some areas, the water held in a wetland recharges the local ground-water system.
U.S. Geological Survey Gaging Stations along the Lewis and Clark Trail
The USGS, in cooperation with about 30 Federal, State, and local agencies, operates an extensive hydrologic data-collection program. Data are collected at streamflow and lake-level stations, ground-water observation wells, water-quality stations, and atmospheric-deposition stations. Current-year data, which are published annually, are critical for the daily administration and management of water resources; for determination of the extent and severity of droughts; for characterization and prediction of conditions during floods; and for monitoring the effects of human activities on streamflow, ground water, and water quality. The data also are essential to interpretive studies that provide information about water issues that potentially affect all North Dakotans.
To view realtime streamflow conditions, click on the map below.
Realtime data are also available on a USGS World Wide Web page at http://waterdata.usgs.gov/nd/nwis/current/?type=flow. Streamflow and stage information for the last 7 days, current stage relative to recorded peak stages, and streamflow for the previous 18 months are provided in graphic form along with information such as station location and length of record.
North Dakota Maps
North Dakota is located in two provinces of the Interior Plains (see figure below). The line that separates these provinces passes through the middle of the State along the base of the eastern escarpment of the Great Plains. The Great Plains province lies to the west of the line, and the Central Lowland province lies to the east of the line.
A major drainage divide transects the State from the northwestern corner, near the eastern edge of the morainal part of the Great Plains, to the center of the State and then to the southeast between the James and Sheyenne Rivers. The southwestern part of the State is drained by the Missouri River, a tributary of the Mississippi River. The northeastern part is drained by the Red River of the North, which flows to Hudson Bay.
The drainage patterns in the Great Plains province generally are well defined except in the Coteau du Missouri, an area of complex glacial moraines. Much of the Coteau does not have integrated drainage and does not contribute surface runoff to the streams. The Central Lowland province is a glaciated area that is covered with glacial till, fine-grained lake sediments, and glaciofluvial drift that consists mainly of sand and gravel deposits. Land in the Central Lowland province slopes slightly to the northeast from about 2,000 feet above sea level along the western border of the lowland to 800 feet above sea level at the northeastern corner of the State. Much of the lowland has poorly developed drainage, and closed basins in the area range in size from a few acres to as much as 3,800 square miles.
Clicking on one of the basins on the map below will take you to a list of station numbers and names that are links to current streamflow conditions for that basin.
National Elevation Dataset
The following shaded relief images of North Dakota and the conterminous United States are part of the National Elevation Dataset. Elevation is shown as a range of colors from dark green for low elevations to white for high elevations.
The National Elevation Dataset (NED) is a seamless raster product derived primarily from USGS 30-meter Digital Elevation Models, and higher resolution data where available. NED data for the conterminous United States are expressed by geographic coordinates (latitude/longitude). Horizontal data are referenced to the North American Datum of 1983, (NAD83) and vertical data are referenced to the North American Vertical Datum of 1988 (NAVD88).
U.S. Geological Survey, 1997, rev. 1999, Strategic Plan for the National Mapping Division of the U.S. Geological Survey: accessed August 10, 2001, at URL http://geography.usgs.gov/misc/strategic.html.