Elise E. Wright Andrew J. Long Leland T. Fuhrig 20230217 groundwater model Reston, VA, USA U.S. Geological Survey https://doi.org/10.5066/P9LU1PMQ Andrew J. Long Elise E. Wright Leland T. Fuhrig Valerie A.L. Bright 2024 publication n/a US Geological Survey https://doi.org/10.3133/sir20245026v2 A three-dimensional groundwater flow model, constructed in MODFLOW-NWT, was developed to evaluate the groundwater flow system near Puget Sound, Pierce and King Counties, Washington. A steady-state model version was constructed to simulate equilibrium conditions, while a transient model version was constructed to simulate monthly variability from January 2005 to December 2015. The model was used to simulate several hydrologic scenarios. This data release contains the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20245026v2). This MODFLOW-NWT model was developed to simulate the groundwater flow system near Puget Sound, Pierce and King Counties, Washington. The development of the model input and output files included in this data release are documented in the U.S. Geologic Survey Scientific Investigations Report 2024-5026-D-E (https://doi.org/10.3133/sir20245026v2) 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/sir20245026v2) to understand the purpose, construction, and limitations of this model. 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 model 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. 20050101 20151231 publication date Complete Not planned -122.7267 -121.8379 47.4391 46.8556 ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Thesaurus groundwater none usgsgroundwatermodel MODFLOW-NWT InlandWaters Groundwater Model USGS Metadata Identifier USGS:62d823d6d34e83b67d134f25 Geographic Names Information System Washington Pierce County King County Puget Sound None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data release. These groundwater model input and output files are provided to support the analyses documented in the associated report (https://doi.org/10.3133/sir20245026v2). Although the information contained in the model files may be useful for other purposes, it is incumbent on the user to understand the purpose, construction, and limitations of this model. Data have been checked to ensure consistency with the accompanying report. If any errors are detected, please notify the originating office. Elise E. Wright U.S. Geological Survey mailing and physical

934 Broadway, Suite 300

Tacoma WA 98402 USA 253-552-1672 eewright@usgs.gov Cities of Auburn, Milton, Puyallup, Sumner, and Tacoma; Pierce Conservation District; Pierce County Public Works; Washington State Department of Health; Washington State Department of Ecology; Thurston County Public Utility District; Cascade Water Alliance; Lakehaven Utility District; Lakewood Water District; Firgrove Mutual Water Company; Fruitland Mutual Water Company; Spanaway Water Company; Summit Water and Supply Company; Mt. View-Edgewood Water Company None Unclassified None Andrew Gendaszek 2023 Soil Water Balance Model U.S. Geological Survey data release 1 Reston, VA, USA U.S. Geological Survey https://doi.org/10.5066/P925FHGQ Richard G. Niswonger Sorab Panday Motomu Ibaraki 2005 Publication Techniques and Methods 6-A37 Reston, VA, USA U.S. Geological Survey Detailed description of the model input and output files included in this data release can be found in this model code documentation report. https://doi.org/10.3133/tm6A37 The model was calibrated to measured values of water levels in wells and lakes and estimated baseflow for 25 streamgages. Hydraulic head values for 273 calibration targets were used for the transient model version, while the steady-state model version used 3992 hydraulic head calibration targets. The model also was calibrated to vertical hydraulic head differences at 616 calibration targets. The model was calibrated by a combination of a manual trial-and-error approach and automatic calibration using PEST. 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/sir20245026v2) 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/sir20245026v2). 2022 Raster pixel Lambert Conformal Conic 45.83333333 47.33333333 -120.5 45.33333333 1640416.66666667 0.0 coordinate pair 500.0 500.0 meters D_North_American_1983 GRS_1980 6378137.0 298.257222101 SIR2024_5026_v2.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/sir20245026v2 usgsgroundwatermodel Delineation of active and inactive areas in the model. https://doi.org/10.3133/sir20245026v2 This model application data release contains all the model input and output files needed to replicate the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20XXXXXX). https://doi.org/10.3133/sir20XXXXXX U.S. Geological Survey GS ScienceBase mailing address

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Denver CO 80225 United States 1-888-275-8747 sciencebase@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 the data, software, and related material have been processed successfully on a computer system at the U.S. Geological Survey (USGS), reviewed for accuracy and completeness, and approved for release by 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. 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. 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, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Digital datasets None 341.261 https://doi.org/10.5066/P9LU1PMQ None. No fees are applicable for obtaining the dataset. 20240821 Elise E. Wright U.S. Geological Survey Hydrologist mailing

934 Broadway, Suite 300

Tacoma WA 98402 United States 252-552-1672 eewright@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998