Jeffrey A. Hansen Bryant C. Jurgens Miranda S. Fram 201806 Raster Digital Data Set Reston, VA U.S. Geological Survey https://doi.org/10.5066/F7319T3K Mendenhall and others (1916) published depth-to-water data compiled in 1910 for all known wells in the San Joaquin Valley, California. Data for the 3,429 wells having depth-to-water of greater than zero feet were used to construct an interpolated depth-to-water surface for the entire SJV. This map represents groundwater levels in approximately 1910, prior to extensive development of the groundwater system. A depth-to-water contour map with contour lines of 5, 10, 15, and 25 meters below land surface was then drawn from this raster surface. The purpose of this dataset is to represent groundwater levels in the San Joaquin Valley, California in approximately 1910, based on data from Mendenhall and others (1916). A GIS raster of depth-to-water below land surface was interpolated from the point data and is provided. 19100101 publication date Complete None planned -121.596541384 -118.526541384 38.242491569 35.072491569 USGS Thesaurus Hydrogeology Groundwater Depth-to-Water Hydrology Public Supply Water Use Agriculture Historic ArcGIS USGS Metadata Identifier USGS:58924154e4b072a7ac14565c Common Geographic Areas United States California Central Valley San Joaquin Valley None. Please see 'Distribution Info' for details. None. Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations. Jeffrey Hansen U.S. Geological Survey Mailing and Physical

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Sacramento CA 95819 United States 916-278-3076 jahansen@usgs.gov This work was supported by the California State Water Resources Control Board Groundwater Ambient Monitoring and Assessment Program and the U.S. Geological Survey Cooperative Water Program. Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1 (Build 4959) Service Pack N/A (Build N/A) Mendenhall, W.C., Stabler, H., and Dole, R.B. 19160101 Washington, Govt. Print. Off., USA U.S. Geological Survey https://pubs.er.usgs.gov/publication/wsp398 Hansen, J.A., Jurgens, B.C., Fram, M.S. 20170331 Reston, Virginia, USA U.S. Geological Survey https://doi.org/10.5066/F7319T3K No formal attribute accuracy tests were conducted. 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 carefully for additional details. A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable. Mendenhall, W.C., Stabler, H., and Dole, R.B. 19160101 Digital and/or Hardcopy Resources Washington, Govt. Print. Off., USA U.S. Geological Survey https://pubs.er.usgs.gov/publication/wsp398 Digital and/or Hardcopy Resources 19160101 publication date Historic Depth-to-Water Data Location of wells and depth-to-water data for San Joaquin Valley, California from 1895-1910 (1) The point dataset consists of 3,429 non-flowing wells with depth-to-water greater than zero feet (Mendenhall and others, 1916). Point locations were estimated for each well (https://www.sciencebase.gov/catalog/item/58923e21e4b072a7ac143c11). For coordinates where there are multiple wells with a depth-to-water measurement, the average depth-to-water for the specified location was used. A rasterized data set was created from the aggregate dataset and depth-to-water averages were interpolated across the region using spherical kriging in ESRI ArcGIS software. The 10 nearest sites were used for interpolation at each point, with an output cell size of 0.2 . (2) The output of this kriging process was used to develop a contour map of historic depth-to-water in the San Joaquin Valley (Supplement 2, Hansen and others, 2017) at intervals of 16.4 feet (5 meters), 32.8 feet (10 meters), 49.2 feet (15 meters), and 82.0 feet (25 meters) with ArcGIS (Contour). 20170331 Raster 0.01 0.01 Decimal seconds D_North_American_1983 GRS_1980 6378137.0 298.257222101 sjv_dtw_krig Rasterized layer file containing interpolated depth-to-water below land surface in the San Joaquin Valley, California around 1910 based on data compiled from U.S. Geological Survey Water Supply Paper 398 by Mendenhall and others, 1916. Hansen and others, 2017 Interpolated Depth-to-Water Interpolated depth-to-water in feet below land surface in the San Joaquin Valley, California around 1910 Hansen and others, 2017 5 167 Feet below land surface The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information. U.S. Geological Survey - ScienceBase U.S. Geological Survey - ScienceBase Mailing and Physical

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Denver CO 80225 US 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 these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (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. Digital Data https://doi.org/10.5066/F7319T3K None. No fees are applicable for obtaining the data set. 20200812 Jeffrey A. Hansen U.S. Geological Survey, PACIFIC REGION Hydrologist Mailing and Physical

6000 J Street Placer Hall

Sacramento CA 95819 United States 916-278-3076 916-278-3070 jahansen@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998