Mark R. Nardi Alex M. Soroka 2019 soil-water balance model Reston, VA, USA U.S. Geological Survey https://doi.org/10.5066/P9992YJM A soil-water balance model (SWB) was developed to estimate potential recharge to the groundwater system in Brunswick, New Hanover, and Pender counties North Carolina 1980 through 2016 to support a regional groundwater flow model being produced for the surficial, Castle Hayne, and Peedee Aquifer System. The SWB model was not calibrated; however, various water budget components from the model output compared reasonably well with other estimates including evapotranspiration rates reported by NASA's MODIS (Moderate Resolution Imaging Spectroradiometer) satellite platform. This USGS data release contains all the input and output files for the simulations described in this data release. This model was created to estimate recharge to the groundwater flow system in Brunswick, New Hanover, and Pender counties in North Carolina. The development of the model input and output files included in this model archive were created to support a regional groundwater flow model being produced for ehe surficial, Castle Hayne, and Peedee Aquifer System. The development of the model input and output files included in this data release are documented as described in this data release. Support is provided for correcting errors in the data release and clarification of the modeling conducted by the U.S. Geological Survey. Users are encouraged to review the SWB model documentation report (https://pubs.usgs.gov/tm/tm6-a31/). The model will run successfully only if the original directory structure is correctly restored. The model archive is broken into several pieces to reduce the likelihood of download timeouts. Instructions for reconstructing the original directory structure and running the models included in this data release and described in report can be found in the readme.txt ASCII file which can be downloaded as part of this data release. 19800101 20161231 publication date Complete None planned -78.68926911839031 -77.44557530881801 34.78505565573578 33.78341329594356 ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Thesaurus SWB Groundwater Recharge evapotranspiration precipitation SSURGO USDA - NRCS Soils inlandWaters USGS Metadata Identifier USGS:76a80506-d256-47a5-9012-5149739b08eb Geographic Names Information System North Carolina Brunswick County New Hanover County Pender County None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data release. none Mark R. Nardi U.S. Geological Survey Mailing and Physical

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Dover DE 19901 USA 302-734-2056 mrnardi@usgs.gov https://water.usgs.gov/GIS/browse/SWB_NC_NewBrunswick_NewHanover_Pender.jpg Image of the model domain and active area of the model. jpg U.S. Geological Survey; Water Availability and Use Science Program No formal attribute accuracy tests were conducted. Model outputs were compared to other independent estimates to assess the overall reliability of simulated results. Results compared reasonably well but no quantitative analysis were performed 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. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted The process used to develop the soil-water balance model is fully described in the model documentation report SWB—A Modified Thornthwaite-Mather Soil-Water-Balance Code for Estimating Groundwater Recharge; Chapter 31 of Section A, Groundwater, of Book 6, Modeling Techniques By S.M. Westenbroek, V.A. Kelson,W.R. Dripps,R.J. Hunt, and K.R. Bradbury (https://pubs.usgs.gov/tm/tm6-a31/). 2017 Vector G-polygon NAD 1983 Albers 29.5 45.5 -84.0 23.0 0.0 0.0 row and column 250.0 250.0 meters North American Datum 1983 GRS 1980 6378137.0 298.257222101 SWB_POLY_GRID.dbf Table containing attribute information associated with the data set. U.S. Geological Survey FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. Id Unique cell identifier U.S. Geological Survey 0 207623 Soil-Water Balance model datasets used to estimate potential groundwater recharge in Brunswick, New Hanover, and Pender counties North Carolina 1980 through 2016: U.S. Geological Survey data release Nardi, M.R. and Soroka A.M., 2019, Soil-Water Balance model datasets used to estimate potential groundwater recharge in Brunswick, New Hanover, and Pender counties North Carolina 1980 through 2016: U.S. Geological Survey data release https://doi.org/10.5066/P9992YJM U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical

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Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov The data have been approved for release by the U.S. Geological Survey (USGS). Although the data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from authorized or unauthorized use. Although the data, software, and related material have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. readme.txt 1.0 data updated 11/28/2019 ASCII text file This ASCII text file describes the model data release. This file also includes descriptions of the model input and output files and instructions on how to run the models contained in this data release. 0.153 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/readme.txt ancillary.zip 1.0 .zip file This .zip file contains all files and sub-directories found in the ancillary directory. Sub-directories included are \Post Proc and \Shapes. The \Post Proc subdirectory contains folders holding SWB output processed into MODFLOW grid cells using area weighted averages created by use of ArcPy routines found in the folder. The subdirectory named \ancillary\PostProc\ORGSTUBS contains point shape files that can be used as example input of un-attributed point files when using the ArcPy routines to calculate SWB output variables (RC=recharge, AE=actual ET, GP=gross precipitation, and RO=runoff )area weighted averages for use in MODFLOW. 976 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/ancillary.zip bin.zip 1.0 ZIP This ZIP file contains SWB executable used to run the model contained in this archive. 2.10 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/bin.zip georef.zip 1.0 ZIP file ZIP file containing a polygon shapefile of the SWB model grid domain. 4 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/georef.zip output.zip 1.0 ZIP file ZIP file containing raw SWSB ASCII output grids for years 1980-2016 includes SWB variables runoff, actual ET, gross precipitation, and recharge. 337 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/output.zip source.zip 1.0 ZIP file ZIP file containing Source files SWB code versions used to run model simulations included in the data release 0.648 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/source.zip model.zip 1.0 ZIP file ZIP file containing SWB models and external files (historic land cover and daily weather data processed by Alex Butler, State of South Carolina). There are main 3 subdirectories in this file; 1) \model\RUN_1980_1992 contains files needed to run SWB for years 1980-1992 inclusive, 2)\model\RUN_1993_2016 contains files needed to run SWB for years 1993-2016 inclusive, and 3)\model\externalfiles including subdirectories for land cover and daily weather data. 1619 https://water.usgs.gov/GIS/dsdl/SWB_NC_3CNTY/model.zip None 20201117 U.S. Geological Survey Ask USGS -- Water Webserver Team Mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998