20250624 11573500 1.0 FGDC TRUE  This layer displays base flow hydrograph separation analyses of selected USGS streamgages, as calculated by the Water Supply Program (WSP) through a base flow separation analysis.This information is for planning purposes only and does not replace a site-specific analysis for a water appropriations permit. Maryland Fractured Rock Base Flow Hydrograph Separation Analyses Baltimore Maryland 21230 Source Protection and Water Appropriations Division, Water Supply Program, Maryland Department of the Environment 0.0 0.0 0.0 0.0 groundwater MDE water balance base flow separation A point layer of selected USGS streamgages in the fractured rock provinces of Maryland with base flow hydrograph separation analyses for using in calcuating water balance for water appropriations permits. Computer programs adapted from Rutledge (1998, USGS W-RIR 98-4148; updated 2012); USGS Hydrologic Toolbox - Barlow, P.M., et al., 2022, TM 4-D3, 23 p. Precipitation Data: 30-year normals 1991-2020 PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed 05 June 2025. Prepared by P.A. Hammond; J. Smith 10/31/2000; Revised by J.P. Stokes; L. Reed; 06/05/2025. This layer should be used for guidance purpose only. Water Supply Program (WSP) at Maryland Department of Environment (MDE) has made every attempt to provide accurate and up to date information on this online map. However,  MDE-WSP may have more current or accurate information. MDE-WSP reserves the rights to update the online map as needed. MDE cannot be held responsible for the misuse or misinterpretation of any information and makes no warranty guarantee or representation of any kind of connection to its accuracy, completeness or adequacy. The map contained herein is not to be interpreted or used as a “legal description”. In no event will MDE or State of Maryland be liable for any damages, including but not limited to loss of data, lost profits, business interruption, loss of business information or any other pecuniary loss that might arise from the use of this map or information it contains.For more information, please contact the Water Supply Program at water.supply@maryland.gov or 410-537-3702  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 Baltimore Maryland 21230 Source Protection and Water Appropriations Division, Water Supply Program, Maryland Department of the Environment