• Science to Inform Management of Floodplain Conservation Lands under Non-Stationary Conditions

    Metadata Updated: March 23, 2018

    Within large-river ecosystems, floodplains serve a variety of important ecological functions. A recent survey of 80 managers of floodplain conservation lands along the Upper and Middle Mississippi and Lower Missouri Rivers in the central United States found that the most critical information needed to improve floodplain management centered on metrics for characterizing depth, extent, frequency, duration, and timing of inundation. These metrics can be delivered to managers efficiently through cloud-based interactive maps. To calculate these metrics, we interpolated an existing one-dimensional HEC-RAS hydraulic model for the Lower Missouri River, which simulated water surface elevations at cross sections spaced (<1 kilometer) to sufficiently characterize water surface profiles along an approximately 800 kilometer stretch upstream from the confluence with the Mississippi River over an 80-year record at a daily time step. To translate these water surface elevations to inundation depths, we subtracted a merged terrain model consisting of floodplain LIDAR and bathymetric surveys of the river channel. We completed these calculations for an 800 kilometer stretch of the Missouri River, spanning from Rulo, Nebraska to the river's confluence with the Mississippi River. This approach resulted in a 29,000+ day time series of inundation depths across the floodplain using grid cells with 30 meter spatial resolution. This dataset presents 17 metrics for each of two scenarios, one using a baseline timeseries of stages from the HEC-RAS simulation and one using a timeseries of stages adjusted to account for changes in discharge under one possible climate change scenario. These metrics are calculated on a per pixel basis and encompass a variety of temporal criteria generally relevant to flora and fauna of interest to floodplain managers, including, for example, the average number of days inundated per year within a growing season. We also include a series of maps of water depths across the floodplain by return interval for each scenario, and the minimum return interval at which each pixel is inundated. Lastly, we include the base elevation layer that we generated to calculate depth of inundation from interpolated water-surface elevations.

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    Dates

    Metadata Date December 19, 2017
    Metadata Created Date March 23, 2018
    Metadata Updated Date March 23, 2018
    Reference Date(s) December 21, 2017 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from CSC-NCCWSC-FGDC1999

    Additional Metadata

    Resource Type Dataset
    Metadata Date December 19, 2017
    Metadata Created Date March 23, 2018
    Metadata Updated Date March 23, 2018
    Reference Date(s) December 21, 2017 (publication)
    Responsible Party U.S. Geological Survey, Midwest Region (Point of Contact)
    Contact Email
    Access Constraints Use Constraints: None. Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations., Access Constraints: None. Please see 'Distribution Info' for details.
    Bbox East Long -90.0550813057
    Bbox North Lat 40.0709909628
    Bbox South Lat 38.5006200584
    Bbox West Long -95.4290546039
    Coupled Resource
    Frequency Of Update notPlanned
    Guid
    Harvest Object Id ac9ad890-4084-48dc-b95c-c2692477ed88
    Harvest Source Id 26e841cc-700f-457b-95f7-07f8052ddca5
    Harvest Source Title CSC-NCCWSC-FGDC1999
    Licence Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
    Metadata Language
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1930-03-01
    Temporal Extent End 2011-12-31

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