Nicasio Sepúlveda 20210722 Vector Digital Data Set (Polygon) Lutz, Florida U.S. Geological Survey https://doi.org/10.5066/P99AB3X4 Nicasio Sepúlveda 2021 U.S. Geological Survey Scientific Investigations Report 2021–5072 U.S. Geological Survey https://doi.org/10.3133/sir20215072 Annual actual evapotranspiration (ETa) rates in 55 basins in Florida and parts of Alabama and Georgia were evaluated for 2000-17 using the Operational Simplified Surface Energy Balance (SSEBop) model at about a one-square kilometer resolution (Sepúlveda, 2021). SSEBop ETa rates were bias corrected using ETa rates computed from weather observations at 24 micrometeorological evapotranspiration flux (MEF) stations (mETa), stratified by land-use type. Uncorrected and bias-corrected SSEBop ETa rates were evaluated by comparison with independent estimates based on a crop-coefficient method for generalized land-use types (luETa) and a water-balance method for each basin (wbETa). This metadata file summarizes a GIS shapefile with basin characteristics for each of the 55 basins, along with average annual estimates of SSEBop ETa (uncorrected and bias-corrected), and differences (residuals) from average annual estimates based on luETa rates and wbETa rates for each basin. The purpose of this data release is to report basin characteristics and average annual actual evapotranspiration rates for 55 basins in Florida and parts of Alabama and Georgia calculated using the Operational Simplified Surface Energy Balance (SSEBop) model, and residuals computed as the difference between SSEBop rates and rates computed using a water-balance method (wbETa) and crop coefficient method based on land-use type (luETa). 20000101 20171231 ground condition Complete As needed -87.7905 -80.0415 31.0 25.1325 USGS Thesaurus evaporation transpiration water balance ISO 19115 Topic Category climatology, Meteorology, Atmosphere USGS Metadata Identifier USGS:60f9b3b8d34e3ccd82fe6ed9 Common geographic areas Florida, southern Alabama, southern Georgia None Florida land surface water-balance method Change in basin storage None. none Nicasio Sepúlveda U.S. Geological Survey, Southeast Region Hydrologist(Math)(RGEG) mailing and physical

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Orlando FL 32826 United States 407-803-5528 nsepul@usgs.gov The SSEBop rates are based on the SSEBop method described in: Senay, G.B., Bohms, S., Singh, R.K., Gowda, P.H., Velpuri, N.M., Alemu, H., and Verdin. J.P., 2013, Operational Evapotranspiration Mapping Using Remote Sensing and Weather Datasets: A New Parameterization for the SSEB Approach: Journal of the American Water Resources Association, v. 49, no. 3, p. 577-591, DOI: 10.1111/jawr.12057. SSEBop ETa rates were downloaded from https://edcftp.cr.usgs.gov/project/SSEBop/MODIS Environment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1 (Build 6491) Service Pack N/A (Build N/A) No formal attribute accuracy tests were conducted. No formal logical accuracy tests were conducted. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable. Florida Department of Environmental Protection Geospatial Open Data 20170531 Raster Digital Data Set Tallahasse, FL Florida Department of Environmental Protection Geospatial Open Data http://geodata.dep.state.fl.us/datasets/statewide-land-use-land-cover Digital and/or Hardcopy Resources 20000101 20171231 ground condition Statewide Basins map Source information used in support of the development of the data set. Dataset copied. 20171231 Use ArcGIS 10.7.1 to open the shapefiles that show the location of the cells. Vector G-polygon 1996 Universal Transverse Mercator 17N 0.9996 -81.0 0.0 500000.0 0.0 coordinate pair 0.1 0.1 METERS D_North_American_1983_HARN GRS_1980 6378137.0 298.257222101 Basins_Shapefiles.shp This ArcGIS 10.7.1 polygon shapefile contains the basin delineation of 55 basins in Florida and parts of Alabama and Georgia. This file lists the average annual ETa rates for the SSEBop (before and after bias corrections), the residuals based on land-use type (luETa) and the water-balance method (wbETa). Actual evapotranspiration methods are described in the ETa information product. Basin_Name Name of the basin. Producer defined. Basin names are generally given based on the name of the stream gaging station at the outlet of the basin. Basin_Id The USGS stream gaging station number at the outlet of the basin is identified as the basin identification number. Identification number of gaging station as used by NWIS to identify station. The stream gaging number is an 8-digit code given by the USGS. Basin_Area Area of the basin. Producer defined. 4.684 9533.277 square miles POR Period of record of operation of the stream gaging station number, and generally the same period of record for which the water-balance method is available. Producer defined. This is the time range (YYYY-YYYY) for which the data needed to apply the water-balance method is available. wbETa Average annual actual evapotranspiration rate for the period of record calculated from the water-balance method (wbETa). Producer defined. 30.48 45.90 inches per year luETa Average annual actual evapotranspiration rate for the period of record calculated from the land-use model (luETa, based on crop coefficient ratios). Producer defined. 34.69 42.76 inches per year. SSEBop Average annual actual evapotranspiration rate for the period of record calculated by the Operational Simplified Surface Energy Balance (SSEBop) method, after bias corrections based on regressions stratified by land-use type. Producer defined. 31.89 45.83 inches per year SSEBop_u Average annual actual evapotranspiration rate for the period of record calculated by the Operational Simplified Surface Energy Balance (SSEBop) method, before bias corrections. The SSEBop method is explained in: Senay, Gabriel B., Bohms, S., Singh, R.K., Gowda, P.H., Velpuri, N.M., Alemu, H., and Verdin. J.P., 2013, Operational Evapotranspiration Mapping Using Remote Sensing and Weather Datasets: A New Parameterization for the SSEB Approach: Journal of the American Water Resources Association, v. 49, no. 3, p. 577-591, DOI: 10.1111/jawr.12057. SSEBop ETa rates were downloaded from https://edcftp.cr.usgs.gov/project/SSEBop/MODIS 14.37 46.42 inches per year SSEBop_wb Average annual residual between SSEBop ETa rate and the water-balance method (wbETa) rate for each basin. Producer defined. -3.67 5.29 inches per year luETa_wb Average annual residual between crop coefficient based on land-use type ETa rate (luETa) and the water-balance method (wbETa) rate for each basin. Producer defined. -4.07 6.49 inches per year. SSEBopu_wb Average annual residual between SSEBopu ETa rate and the water-balance method (wbETa) for each basin. Producer defined. -16.11 6.24 inches per year Agency Agency in Florida which delineated the basin. Producer defined. NWFWMD This basin was delineated by the Northwest Florida Water Management District. Northwest Florida Water Management District. SRWMD This basin was delineated by the Suwannee River Water Management District. Suwannee River Water Management District. SJRWMD This basin was delineated by the St. Johns River Water Management District. St. Johns River Water Management District. SFWMD This basin was delineated by the South Florida Water Management District. South Florida Water Management District. SWFWMD This basin was delineated by the Southwest Florida Water Management District. Southwest Florida Water Management District. TBW This basin was delineated by Tampa Bay Water. Tampa Bay Water. Number A counter of the basin number, from 1 to 55, used in the report to refer to a particular basin. Producer defined. 1 55 dimensionless integer, a counter. PER_Res Percentage of average annual residual SSEBop_wb ETa rate for each basin relative to wbETa rates. Producer defined. -9.30 17.36 Percentage of the wbETa rates. The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. The SSEBop method is explained in: Senay, Gabriel B., Bohms, S., Singh, R.K., Gowda, P.H., Velpuri, N.M., Alemu, H., and Verdin. J.P., 2013, Operational Evapotranspiration Mapping Using Remote Sensing and Weather Datasets: A New Parameterization for the SSEB Approach: Journal of the American Water Resources Association, v. 49, no. 3, p. 577-591, DOI: 10.1111/jawr.12057. SSEBop ETa rates were downloaded from https://edcftp.cr.usgs.gov/project/SSEBop/MODIS. Nicasio Sepúlveda U.S. Geological Survey, Southeast Region Hydrologist(Math)(RGEG) mailing and physical

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Orlando FL 32826 United States 407-803-5528 nsepul@usgs.gov 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. Vector Digital Data Set (Polygon) ArcGIS 10.7.1 ESRI Polygon Shapefile This file contains ArcGIS polygon shapefiles with the delineations of all 55 basins. 4.16 https://doi.org/10.5066/P99AB3X4 Shapefiles were generated using ArcGIS v 10.7.1. None The user must be familiar with ArcGIS to access shapefiles. 20210722 Nicasio Sepúlveda U.S. Geological Survey, Southeast Region Hydrologist(Math)(RGEG) mailing and physical

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Orlando FL 32826 United States 407-803-5528 407-803-5501 nsepul@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time