Thomas J. Mack Jack R. Eggleston Jeffrey L. Imes Wade Kress Dennis W. Woodward Daniel J. Bright 2020 Version 1.0 groundwater model Reston, VA, USA U.S. Geological Survey https://doi.org/10.5066/P9ZWZISB Jack R. Eggleston Thomas J. Mack Jeffrey L. Imes Wade Kress Dennis W. Woodward Daniel J. Bright 2020 Publication Scientific Investigations Report 2018-5158 Reston, VA, USA U.S. Geological Survey https://doi.org/10.3133/sir20185158 A numerical groundwater flow model using MODFLOW-2005 was developed to examine predevelopment groundwater flow in eastern Abu Dhabi Emirate, United Arab Emirates. The model was calibrated to conditions before the 1960s, the period before modern pumping began. The model was used to evaluate the regional water budget and 4 potential recharge scenarios. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20185158). This data release also includes input and output data files for sensitivity and scenarios simulations, and MODFLOW-2015 source code. This groundwater model was created to evaluate the regional water budget and 4 potential recharge scenariosin eastern Abu Dhabi Emirate, United Arab Emirates. The development of the model input and output files included in this data release are documented in U.S. Geological Survey Scientific Investigations Report 2018-5158 (https://doi.org/10.3133/sir20185158). 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 model documentation report (https://doi.org/10.3133/sir20185158) to understand the purpose, construction, and limitations of this model. The models 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 the model documentation report can be found in the readme.txt ASCII file which can be downloaded as part of this data release. The structure of the archive and associated download files were modified on 12/18/2017 to match the U.S. Geological Survey Office of Groundwater groundwater model archive structure. 1960 1980 publication date Complete Not planned -80.78 -80.018 26.487 25.919 USGS Thesaurus usgsgroundwatermodel MODFLOW-2005 Groundwater Groundwater Model ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:352bbf07-a8e1-4083-be31-aded7332e8fe Geographic Names Information Systems Abu Dhabi United Arab Emirates None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data release. none Thomas J. Mack U.S. Geological Survey mailing and physical

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Pembroke NH 03275 USA 603-226-7805 tjmack@usgs.gov https://water.usgs.gov/GIS/browse/sir2018-5158Thumbnail.jpg Image of the model domain and active area of the model. jpg Environment Agency - Abu Dhabi The model was calibrated using data from 1960 to 1980, the period for which historical data are most complete, and was used to simulate predevelopment conditions. The calibration process was constrained by water-level data from 1,342 groundwater monitoring wells. 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 and the associated model documentation report (https://doi.org/10.3133/sir20185158) for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted The process used to develop, calibrate, and apply the model is fully described in the model documentation report (https://doi.org/10.3133/sir20185158). 2020 raster pixel Nahrwan 1967 / UTM zone 40N 0.9996 0.0 0.0174532925199433 500000.0 0.0 row and column 500.0 500.0 meters Global Digital Elevation Model Version 2 (ASTER GDEM Validation Team, 2011) 1.0 meters Attribute values sir2018_5158.shp ESRI Polygon shapefile U.S. Geological Survey Area Text string indicating is polygon area is active or inactive in the model. https://doi.org/10.3133/sir20185158 usgsgroundwatermodel Delineation of active and inactive areas in the model. https://doi.org/10.3133/sir20185158 Mack, T.J., Eggleston, J.R., Imes, J.L., Kress, W., Woodward, D.W., and Bright, D.J., 2020, MODFLOW-2005 groundwater flow model to simulate predevelopment groundwater flow in the eastern Abu Dhabi Emirate, United Arab Emirates: U.S. Geological Survey data release. https://doi.org/10.5066/P9ZWZISB U.S. Geological Survey Michael Ierardi IT Specialist mailing address

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Reston VA 20192 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 ASCII text file This ASCII text file describes the model data release. This file also includes instructions on how to run the models contained in this data release. 0.015 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/readme.txt modelgeoref.txt 1.0 ASCII text file This ASCII text file defines the four corners of the model domain. Model data files are in the Nahrwan_1967_Transverse_Mercator projection. 0.001 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/modelgeoref.txt ancillary.zip 1.0 ZIP This directory contains ancillary data including directories with sensitivity and scenario ucode model input files. The directory also includes sensitivity and scenario ucode model output datasets. 57.869 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/ancillary.zip bin.zip 1.0 ZIP file ZIP file containing the 64-bit executable used to run the 4 MODFLOW-2005 simulations and the 4 UCODE-2014 simulations documented in the report. 3.271 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/bin.zip georef.zip 1.0 ZIP file ZIP file containing a shapefile which defines the extent of the model domain and active portions of the model. 0.010 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/georef.zip model.zip 1.0 ZIP file This ZIP file contains the input files for the scenario 4 simulation included in this data release. 16.104 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/model.zip output.zip 1.0 ZIP file This ZIP file contains the output files for the scenario 4 simulation included in this data release. 24.009 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/output.zip source.zip 1.0 ZIP file ZIP file containing Source files for MODFLOW-2005 and UCODE_2014 used to run the simulations included in this data release. 0.739 https://water.usgs.gov/GIS/dsdl/gwmodels/sir2018-5158/source.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