Abstract:

This dataset contains shapefiles characterizing the major spatial components of the Oysterflows projects. Three files are included. 1. Modeled_Salinity_Points.shp: contains points where salinity was predicted under future conditions using a statistical model and the input datasets 2. WaterFALL_Watersheds_Oysterflows.shp: contains delineated watersheds for all major freshwater rivers and streams entering the modeled estuaries. 3. WaterFALL_Streamlines_Oysterflows: contains NHD streamlines for all major freshwater rivers and streams entering the modeled estuaries. Inputs reflecting baseline conditions are available in GRIIDC dataset H4.x955.000:0001 (https://doi.org/10.7266/48cfe02r). The major spatial components of the Oyster Flows project (watersheds, streamlines, modeled prediction points) are available in H4.x955.000:0003 (https://doi.org/10.7266/hdyw1arv).

Suggested Citation:

Gross, Shannon, Benjamin Lord, and Michele Eddy. 2025. Oysterflow spatial components: Modeled salinity points, watersheds, and streamlines. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/hdyw1arv

Purpose:

This dataset contains shapefiles characterizing the major spatial components of the Oysterflows projects.

Data Parameters and Units:

Latitude [decimal degrees], longitude [decimal degrees], stream level [enum], stream order [enum], basin (Wolf, Jourdan, Biloxi, Bogue Chitto, Sabine, Pascagoula, Pearl, Calcasieu, Tchoutacabouffa), group (Bay St. Louis, Biloxi Bay, Pearl, Sabine, Pascagoula, Calcasieu).

Methods:

Watersheds and streamlines were developed by aggregating National Hydrography Dataset catchments and streamlines. Salinity gauge locations were provided by respective monitoring and reporting agencies (USGS, Louisiana Coastwide Reference Monitoring System, and the Texas Water Development Board). NHD Streamlines and catchments can be downloaded from https://www.epa.gov/waterdata/get-nhdplus-national-hydrography-dataset-plus-data#v2datamap.

Provenance and Historical References:

Eddy, M. C., Moreda, F. G., Dykes, R. M., Bergenroth, B., Parks, A., & Rineer, J. (2017). The Watershed Flow and Allocation Model: An NHDPlus-based watershed modeling approach for multiple scales and conditions. Journal of the American Water Resources Association, 53(1), 6–29. https://doi.org/10.1111/1752-1688.12496 Eddy, M. C., Lord, B., Perrot, D., Bower, L. M., & Peoples, B. K. (2022). Predictability of flow metrics calculated using a distributed hydrologic model across ecoregions and stream classes: implications for developing flow-ecology relationships. Ecohydrology, 15(2), e2387. https://doi.org/10.1002/eco.2387

Individual Files: