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snippet: Layer displaying periodic groundwater level depth measurements taken from USGS National Water Information System (NWIS) wells in California. Data obtained February 23, 2026. Data obtained from following link: https://nwis.waterdata.usgs.gov/ca/nwis/gwlevels
summary: Layer displaying periodic groundwater level depth measurements taken from USGS National Water Information System (NWIS) wells in California. Data obtained February 23, 2026. Data obtained from following link: https://nwis.waterdata.usgs.gov/ca/nwis/gwlevels
extent: [[-124.25191669971,32.5424833303209],[-114.194810599764,41.9686388902076]]
accessInformation: Data obtained from USGS, please reference the link in the descriptions for questions regarding the data. For questions about this layer, please contact GAMA@waterboards.ca.gov.
thumbnail: thumbnail/thumbnail.png
maxScale: 1.7976931348623157E308
typeKeywords: ["ArcGIS","ArcGIS Server","Data","Feature Access","Feature Service","providerSDS","Service"]
description: <div style='text-align:Left;font-size:12pt'><div><div><p><span>Layer displaying periodic groundwater level depth measurements taken from USGS National Water Information System (NWIS) wells in California. Data obtained February 23, 2026. Data updated semi-annually. </span></p><p><span>Data obtained from following link: https://nwis.waterdata.usgs.gov/ca/nwis/gwlevels</span></p></div></div></div>
licenseInfo: <div style='text-align:Left;font-size:12pt'><p><span>For public use.</span></p></div>
catalogPath:
title: USGS NWIS Periodic GW Depth Measurements
type: Feature Service
url:
tags: ["NWIS","Groundwater depth"]
culture: en-US
portalUrl:
name: USGS_NWIS_Periodic_GW_Depth_Measurements
guid: E417F204-6EBA-4CBA-9EEE-6993E9FFA577
minScale: 0
spatialReference: WGS_1984_Web_Mercator_Auxiliary_Sphere