Our scientists gather information through periodic or continuous measurement in the field to provide a view of current conditions. In some instances, observations may not be subject to rigorous review before release; this will be noted in the documentation accompanying the data.

Fundamental Science Practices

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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.

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Real-time Data

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South Dakota Surface Water Data South Dakota Surface Water Data

Real-time, daily, peak-flow, field measurements, and statistics of current and historical data that describe stream levels, streamflow (discharge), reservoir and lake levels, surface-water quality, and rainfall in Wisconsin. Surface-water data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.

Dakota Water Science Center

South Dakota Water Quality Data South Dakota Water Quality Data

At selected surface-water and groundwater sites, the USGS maintains instruments that continuously record physical and chemical characteristics of the water including pH, specific conductance, temperature, dissolved oxygen, and percent dissolved-oxygen saturation. Supporting data such as air temperature and barometric pressure are also available at some sites.

Dakota Water Science Center

South Dakota Ground Water Data South Dakota Ground Water Data

Data from wells, springs, test holes, tunnels, drains, and excavations in South Dakota; well location data includes information such as latitude and longitude, well depth, and aquifer. Groundwater level data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.

Dakota Water Science Center

North Dakota Surface Water Data North Dakota Surface Water Data

Dakota Water Science Center

North Dakota Water Quality Data North Dakota Water Quality Data

Dakota Water Science Center

North Dakota Ground Water Data North Dakota Ground Water Data

Data from wells, springs, test holes, tunnels, drains, and excavations in North Dakota; well location data includes information such as latitude and longitude, well depth, and aquifer. Groundwater level data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.

Dakota Water Science Center