MODFLOW and MODFLOW Conduit Flow Process data sets for simulation experiments of the Woodville Karst Plain, near Tallahassee, Florida with three different approaches and different stress periods

Eve L. Kuniansky 2016 MODFLOW and MODFLOW Conduit Flow Process data sets for simulation experiments of the Woodville Karst Plain, near Tallahassee, Florida with three different approaches and different stress periods groundwater simulation Reston, Va., USA U.S. Geological Survey https://doi.org/10.5066/F7PK0D87 Eve L. Kunianksy 2016 Simulating Groundwater Flow in Karst Aquifers with Distributed Parameter Models—Comparison of Equivalent Porous Media and Hybrid Flow Approaches Publication Scientific Investigations Report 2016-5116 Reston, Va., USA U.S. Geological Survey https://doi.org/10.3133/sir20165116 This Data Release has 18 different groundwater flow simulation applications for the Woodville Karst Plain area near Tallahassee Florida with three variations of distributed parameter model approach. The site model files provided include both calibrated and uncalibrated simulations of various steady-state and transient hydrologic conditions. Simulations were accomplished with equivalent porous media models that allow laminar flow only (MODFLOW) or laminar and non-laminar flow in a model layer (MODFLOW-CFP mode 2) and hybrid model simulations (MODFLOW-CFP mode 1 one-dimensional pipe network linked to equivalent porous media model). The test examples of the application of equivalent porous media model (the sponge) with and without turbulence and a hybrid model (sponge with pipes) to the Woodville Karst Plain near Tallahassee, Florida, indicated that for annual, monthly, or seasonal average hydrologic conditions, all methods met calibration criteria (matched observed water levels and average flow). Thus, the increased effort, such as the collection of data on conduit location and the computational time of a hybrid model, is not necessary for simulation of average hydrologic conditions (simulation of non-laminar flow was not critical). However, simulation of a large storm event in the Woodville Karst Plain with daily stress periods (52-day period beginning August 13, 2008) indicated that turbulence is important for matching daily springflow hydrographs and models calibrated to average conditions did not match daily storm spring hydrographs. All models were developed from an equivalent porous media model for the area calibrated by J. Hal Davis, USGS, Tallahasee Florida Office that is documented in Davis, J.H., Katz, B.G., and Griffin, D.W., 2010, Nitrate-N movement in groundwater from the land application of treated municipal wastewater and other sources in the Wakulla Springs springshed, Leon and Wakulla Counties, Florida, 1966–2018: U.S. Geological Survey Scientific Investigations Report 2010–5099, 90 p. (https://pubs.usgs.gov/sir/2010/5099/). The hybrid model was developed by Josue J. Gallegos and documented in Gallegos, J.J., Hu, B.X., and Davis, Hal, 2013, Simulating flow in karst aquifers at laboratory and sub-regional scales using MODFLOW-CFP: Hydrogeology Journal, v. 21, no. 8, p. 1749–1760. The groundwater simulation files provided in this data release were developed to help illustrate the appropriate application of hybrid models or equivalent porous media models for karst aquifers with first magnitude springs. The discussion of the simulations are documented in Kuniansky, E.L., 2016, Simulating Groundwater Flow in Karst Aquifers with Distributed Parameter Models—Comparison of Equivalent Porous Media and Hybrid Flow Approaches: U.S. Geological Survey Scientific Investigations Report 2016-5116 (https://doi.org/10.3133/sir20165116). The simulation data release is broken into parts. Discussion of simulations are described in the associated scientific investigations report (https://doi.org/10.3133/sir20165116). To use the data sets one must be familiar with running MODFLOW software. Descriptions and organization of the data sets are in the top level ASCII file entitled readme1st.txt, which is part of this data release. Additional ASCII files with the readme prefix have more details within some subfolders. All simulations were run in 2016 on Windows 7, 64-bit Operating System personal computer. The U. S. Geological Survey (USGS) conducted this applied research into the application of the MODFLOW-Conduit Flow Process at the Woodville Karst Plain with the voluntary assistance of Josue J. Gallegos a graduate student at Florida State University. Josue Gallegos converted a USGS MODFLOW model of the area developed by Hal Davis into a hybrid model using MODFLOW-Conduit Flow Process with the assistance of Hal Davis, Eve Kuniansky, and Barclay Shoemaker (USGS). 19660101 20181231 publication date Complete Not planned -84.47830504 -84.06306787 30.44950966 30.05139406 USGS Thesaurus usgsgroundwatermodel geoscientificInformation inlandWaters environment karst MODFLOW MODFLOW-CFP groundwater groundwater simulation ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:db10c477-1304-4695-ace9-2ab50bed6212 Geographic Names Information System Florida Tallahassee Floridan aquifer Woodville Karst Plain Leon County Wakulla County Wakulla Springs None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data release. none Eve L. Kuniansy U.S. Geological Survey mailing and physical

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Norcross GA. 30093 USA 678-924-6621 elkunian@usgs.gov https://water.usgs.gov/GIS/browse/sir2016_5116_thumbnail.jpg Image of the approximate study area and model area. jpg Water Use and Availability Science Program of the U.S. Geological Survey Simulated potentiometric head and springflow were compared for some simulations and only springflow compared for storm simulation. No formal logical accuracy tests were conducted and not all example simulations meet calibration criteria. Simulation users are advised to read metadata records and the associated scientific investigations report (https://doi.org/10.3133/sir20165116). No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted The process used to develop, calibrate, and apply the MODFLOW groundwater model is fully described in the model documentation report (https://pubs.usgs.gov/sir/2010/5099/). The experimental simulations with MODFLOW-Conduit Flow Process are described in (https://doi.org/10.3133/sir20165116). 2016 raster pixel Albers_Equal_Area_Conic_USGS_CONUS_NAD83_NEW 29.5 45.5 -83.0 23.0 0.0 0.0 row and column 499.22 499.34 feet National Geodetic Vertical Datum of 1929 1.0 feet Attribute values sir2016_5116.shp ESRI Polygon shapefile U.S. Geological Survey TYPE Text string indicating the polygon represents the active and inactive simulated area. https://doi.org/10.3133/sir20165116 usgsgroundwatermodel Simulation area. https://doi.org/10.3133/sir20165116 Kuniansky, E.L., 2016, MODFLOW and MODFLOW Conduit Flow Process simulation experiments of the Woodville Karst Plain, near Tallahassee, Florida with three different approaches and different stress periods: U.S. Geological Survey data release. https://doi.org/10.5066/F7PK0D87 U.S. Geological Survey Michael Ierardi mailing and physical

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Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov Although these data sets have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. 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 none .txt ASCII text file This text file contains the description of the full directory structure and files contained within the data release; and directions on how to run the model scenarios. 0.01 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/readme1st.txt modelgeoref.txt none .txt ASCII text file Latitude and longitude coordinates of corners of the model area 0.002 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/modelgeoref.txt ancillary.zip none .zip compressed archive of files Useful information about simulations 36.4 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/ancillary.zip bin.zip none .zip compressed archive of files Groundwater model code executable files 13.2 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/bin.zip georef.zip none .zip compressed archive of files Shape files of active and inactive groundwater model area 0.007 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/georef.zip model.zip none .zip compressed archive of files Groundwater simulation input files 38.5 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/model.zip output.zip none .zip compressed archive of files Groundwater simulation output files 1.6 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/output.zip source.zip none .zip compressed archive of files Groundwater simulation executable, documents, and source code 32.3 https://water.usgs.gov/GIS/dsdl/gwmodels/SIR2016-5116/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