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Mississippi River: Percentage of annual days that river stage exceeds 'open river' conditions for lock and dams on the Upper Mississippi River, 1985-2015

Dates

Start Date
1985-01
End Date
2015-12
Publication Date

Citation

Bouska, K.L., 2021, Percentage of annual days that river stage exceeds 'open river' conditions for lock and dams on the Upper Mississippi River, 1985-2015: U.S. Geological Survey data release, https://doi.org/10.5066/P9J8BBQ3.

Summary

U.S. Army Corps of Engineers river stage and discharge data (www.rivergages.com) were used to calculate longitudinal connectivity, which is represented by the number of days each lock and dam is in “open river” conditions. During high water conditions, dam gates are generally lifted out of the water or lowered to the river bottom, removing physical barriers to passage (“open river condition”). Each lock and dam in the Upper Impounded and Lower Impounded Reaches has a specific discharge or stage that when reached, results in open river conditions. For each lock and dam, we calculated the average annual number of days in which daily discharge or stage would have resulted in open river conditions between 1985 and 2015. The lock and dams [...]

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Attached Files

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Annual_openriver.csv 8.78 KB text/csv

Purpose

The data were developed to represent longitudinal connectivity at lock and dam locations.

Map

Communities

  • USGS Data Release Products
  • Upper Midwest Environmental Sciences Center (UMESC)

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Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9J8BBQ3

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