Title: Hydrological Dataset for Reservoir Sedimentation in Texas

Authors: Jiyong Lee1, Mirko Musa2, Soumendra Bhanja3, Antonia Chu1, Carly Hansen1, Debjani Singh1, John Zhu4, and Shih-Chieh Kao1

Affiliations: 
	1. Environmental Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd, Oak Ridge, TN 37830, USA, 
	2. School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
	3. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd, Oak Ridge, TN 37830, USA
	4. Texas Water Development Board, Austin, TX 78701, USA

Date of creation / version: May 26, 2026 / v1

Dataset description:
	This dataset provides information about reservoir sedimentation in Texas, including observed and remotely sensed sediment concentration, river discharge, watershed boundary, lake geometry, observed and modeled reservoir capacity, precipitation, soil erodibility, channel slopes, land use and land cover (LULC), and population data. In-depth interpretation and a detailed methodology regarding the dataset can be found in the manuscript "Sedimentation and nonlinear trapping in Texas reservoirs identified using remote sensing and bathymetric survey records" (see the citation section below) 

Directory structure:
	- data
		- raw: original data from the sources
			- NHDPlusV2: watershed characteristics
				- NHDPlusV2_HUC11: Ark-Red-White Hydrologic Region 
						- EROMExtension: modeled river discharge for each river segment
						- NHDPlusCatchment: Polygon shapefile of the local catchment area
						- NHDSnapshot: Flowlines (stream and river centerlines), Waterbodies (lakes, reservoirs, wetlands), Points (springs, dams, stream gages, etc)
						- WBDSnapshot: watershed boundary
				- NHDPlusV2_HUC12: Texus-Gulf Hydrologic Region
						- EROMExtension: modeled river discharge for each river segment
						- NHDPlusCatchment: Polygon shapefile of the local catchment area
						- NHDSnapshot: Flowlines (stream and river centerlines), Waterbodies (lakes, reservoirs, wetlands), Points (springs, dams, stream gages, etc)
						- WBDSnapshot: watershed boundary
		- processed: subsetted data used for further analysis
			- AORC: precipitation
			- HydroLakes: water surface polygons
			- NHDPlusV2
				- slopes: channel slopes
				- watershed_boundary: watershed boundary polygons for each river basin
			- NLCD:land use/land cover (LULC) data (1985 and 2019)
				- clipped: clipped LULC for each river basin
				- LULC_time
					- LULC_time.py: python script to compute timeseries of LULC for each river basin
					- brazos: LULC changes over time for the Brazos River basin
					- colorado: LULC changes over time for the Colorado River basin
					- neches: LULC changes over time for the Neches River basin
					- red: LULC changes over time for the Red River basin
					- sabine: LULC changes over time for the Sabine River basin
					- trinity: LULC changes over time for the Trinity River basin
			- ressed_acc/remote_sensing: accumulated sediment volume using remote sensing
				- sediflux__{river name}_{reservoir_id}.py: script to extract sediment fluxes that enter & exit a reservoir
				- sediflux_in: incoming sediment flux to a reservoir
				- sediflux_out: exiting sediment flux out of a reservoir
				- {reservoir_id}.nc: timeseries of reservoir capacity
			- RiverSed: remotely sensed sediment concentration data, produced by John Gardner, publicly available at https://zenodo.org/records/4900563#.ZGJo3XbMKUk
				- change_sediflux_ssc: changes in time averaged sediflux between 1984-1993 and 2010-2019
					- change_sediflux_ssc_{river_name}.nc: changes in time averaged sediflux between 1984-1993 and 2010-2019
					- geopandas_{river_name}.shp: shapefile for each river
				- major_rivers_tx
					- bias_correction_ssc: bias corrected sediment concentration from remote sensing
					- sediflux: sediment flux = sediment concentration * modeled river discharge
					- nhdplusv2_modified_v1.0_{river}.shp: shape files corresponding to each river 
					- RiverSed_{river}.nc: sediment concentration time series for each river
				- temporal_resolution
					- nhdplusv2_major_rivers_tx.gpkg: processed geometry files for the major Texas Rivers from RiverSed (nhdplusv2_modified_v1.0.shp)
					- temporal_resolution_major_rivers_tx.nc: the corresponding temporal resolution 
			- TDC: future projection of population in Texas from Texas Demographic Center (TDC)
			- TWDB
				- sed_rate: reservoir sedimentation rate for each reservoir with repeated bathymetric survey data
				- sed_summary.csv: summary csv file for reservoir capacity
				- sed_summary.py: python script to generate sed_summary.csv 
			- USCB: historical population in Texas
			- USGS
				- Q
					- 1971_2000: river discharge trimmed for this period, consistent with modeled river discharge in NHDPlus
						- brazos
						- colorado
						- neches
						- red
						- sabine
						- trinity
					- 1984_2019: river discharge trimmed for this period, consistent with remotely sensed sediment concentration data
						- brazos
						- colorado
						- neches
						- red
						- sabine
						- trinity
				- ssc: measured sediment concentration data that are located in main channels, where remotely sensed sediment concentration data are available
					- brazos
					- colorado
					- neches
					- red
					- sabine
					- trinity
					- usgs_summary_{river}.xlsx: summary of USGS sediment concentration stations in main channels
						
	- env: python virtual environment folder named "trs"
	- figures: python scripts to reproduce the figures in the paper
		- Fig1
		- Fig2
		- Fig3
		- Fig4
		- Fig5
		- Fig6
		- Fig7
		- Fig8
		- Fig9
		- Fig10
		- Fig11
		- Fig12
		- Fig1S
		- Fig2S
		- Fig3S

Related Publication: "Sedimentation and nonlinear trapping in Texas reservoirs identified using remote sensing and bathymetric survey records (Water Resources Research, AGU)"

Citation: Jiyong Lee, Mirko Musa, Soumendra Bhanja, Antonia Chu, Carly H. Hansen, Debjani Singh and John Zhu. 2026. Hydrological Dataset for Reservoir Sedimentation in Texas. HydroSource. Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. DOI: 10.21951/TXResSed/3364154

Data Sources:
- lake geometries: https://www.hydrosheds.org/products/hydrolakes
- watershed characteristics & river networks & modeled river discharge: https://www.epa.gov/waterdata/get-nhdplus-national-hydrography-dataset-plus-data\#Download}
- dam information: https://nid.sec.usace.army.mil/\#/downloads
- remotely sensed sediment concentration: https://zenodo.org/records/4900563\#.ZGJo3XbMKUk
- historical population: https://www2.census.gov/programs-surveys/popest/tables/
- future population: https://demographics.texas.gov/Projections/2022/
- reservoir capacity: https://www.twdb.texas.gov/surfacewater/surveys/completed/list/
- measured river discharge & sediment concentration: https://waterdata.usgs.gov/nwis
- soil properties: https://www.nrcs.usda.gov/resources/data-and-reports/soil-landscapes-of-the-united-states-solus
- precipitation: https://registry.opendata.aws/noaa-nws-aorc