Paul F. Juckem Dale M. Robertson 2018 1.0 groundwater model Reston, VA, USA U.S. Geological Survey https://doi.org/10.5066/F7F18WXW Dale M. Robertson Paul F. Juckem Eric D. Dantoin Luke A. Winslow 2018 Publication Lake and Reservoir Management Taylor and Francis Online https://doi.org/10.1080/10402381.2017.1412374 A MODFLOW-NWT groundwater flow model was developed to simulate groundwater movement in the area around Anvil Lake, and groundwater inputs and outputs from the lake from 1980 to 2014. Surface-water hydrology was simulated using the lake package. The MODFLOW model was first calibrated for steady-state conditions, or "average" conditions corresponding to January 1, 1980, to December 31, 2014 to estimate spatial hydrogeologic properties. Following the steady-state calibration, the model was applied in transient mode to estimate average monthly hydrologic conditions (groundwater inputs and outputs) for each year from 1980 to 2014. The purpose of this model was to support an assessment of how changes in water level and climate affect the hydrodynamics and trophic state of shallow lakes. 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 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. 19800101 20141231 publication date Complete Not planned -89.158505 -88.947049 46.058408 45.864197 USGS Thesaurus usgsgroundwatermodel MODFLOW-NWT Groundwater InlandWaters Groundwater Model PEST Soil-Water-Balance Code LAK ISO 19115 Topic Category geoscientific Information inlandWaters environment USGS Metadata Identifier USGS:09626b46-dbdd-4ab7-bb50-e8bc37713e77 Geographic Names Information System Wisconsin Vilas County Oneida County Forest County Anvil Lake None. Acknowledgement of the U.S. Geological Survey and would be appreciated in products derived from this data release. none Paul F. Juckem U.S. Geological Survey mailing and physical

8505 Research Way

Middleton WI 53562 USA 608-821-3845 pfjuckem@usgs.gov https://water.usgs.gov/GIS/browse/LRM2018_anvil.jpg Image of the model domain and active area of the model; the entire domain is active. jpg Wisconsin Department of Natural Resources, Town of Washington, and the Anvil Lake Association The model was calibrated using the parameter estimation code PEST, and calibration targets included heads, streamflows, lake level, and groundwater inflow to the lake. Steady-state calibration focused on the period from 1980 through 2014 to establish hydrogeologic properties. A second steady state model run using climate data from 1980 to establish starting conditions for the transient model. The transient model, run from 1980-2014, was calibrated to average monthly measured water level in Anvil Lake. The transient model retained hydrogeologic properties from the steady state model. 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 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 groundwater-flow model is fully described in the publication ( https://doi.org/10.1080/10402381.2017.1412374). 2018 raster pixel NAD_1983_UTM_Zone_16N 0.99960000 -87.00000000 0.00000000 1640416.666666667 0.0 row and column 100.0 100.0 Model units are feet. Projection units are feet. NAVD 88 1.0 feet Attribute values LRM2018_anvil.shp ESRI Polygon shapefile U.S. Geological Survey area The text string indicating if the polygon area is active or inactive in the model. The entire domain is active. The publication can be found at (https://doi.org/10.1080/10402381.2017.1412374). usgsgroundwatermodel Delineation of active and inactive areas in the model. The paper is in the ancillary directory of this model archive. Juckem, P.F., Robertson,D.M., 2018, MODFLOW-NWT model data sets used to evaluate changes in the hydrodynamics of Anvil Lake, Wisconsin: U.S. Geological Survey data release. https://doi.org/10.5066/F7F18WXW U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical address

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Reston VA 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. readme1st.txt 1.0 ASCII text file This ASCII text file describes the model data release. This file also includes the description of the model output files and instructions on how to run the models contained in this data release. 0.01 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/readme1st.txt modelgeoref.txt 1.0 ASCII text file This ASCII text file defines the four corners of the model domain in decimal degrees. 0.001 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/modelgeoref.txt ancillary.zip 1.0 ZIP file ZIP file containing steady state model netcdf files. 19.4 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/ancillary.zip bin.zip 1.0 ZIP file ZIP file containing the MODFLOW-NWT (v. 1.0.9) executable that was used to run the simulations in the study. 3.6 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/bin.zip georef.zip 1.0 ZIP file ZIP file containing a shapefile which defines the maximum extent and active area of the MODFLOW-NWT model domain (LRM2018_anvil.shp) 0.013 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/georef.zip model.zip 1.0 ZIP file This ZIP file contains the input files for the three model simulations (steady-state (1980-2014 conditions), steady-state (1980 conditions only) and transient). 86.1 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/model.zip output.zip 1.0 ZIP file ZIP file containing all model output files. 26.9 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/output.zip source.zip 1.0 ZIP file ZIP file containing Source files for MODFLOW-NWT (v. 1.0.9) code that was used to run the simulations in this study. 20.8 https://water.usgs.gov/GIS/dsdl/gwmodels/LRM2018_anvil/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