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snippet: Display and/or analysis requiring spatially distributed annual total precipitation for the climatological period 1991-2020.
summary: Display and/or analysis requiring spatially distributed annual total precipitation for the climatological period 1991-2020.
extent: [[-122.780335607359,38.046995720257],[-121.925214113227,38.9400531752957]]
accessInformation: PRISM Climate Group at Oregon State University, 2025
thumbnail: thumbnail/thumbnail.png
maxScale: 1.7976931348623157E308
typeKeywords: ["ArcGIS","ArcGIS Server","Data","Map Service","Service"]
description: <div style='text-align:Left;'><div><div><p><span>Monthly 30-year "normal" dataset covering the conterminous U.S., averaged over the climatological period 1991-2020. Contains spatially gridded average annual total precipitation at 4km grid cell resolution. Distribution of the point measurements to the spatial grid was accomplished using the PRISM model, developed and applied by Dr. Christopher Daly of the PRISM Climate Group at Oregon State University. This dataset is available free-of-charge on the PRISM website.</span></p></div></div></div>
licenseInfo: <div style='text-align:Left;'><div><div><p><span>Acknowledgement of the following agencies in products derived from these data: PRISM Climate Group at Oregon State University.</span></p><p><span>Disclaimer: This GIS data is intended to provide a visual display of data for the user's convenience. Users of this data are hereby notified that the appropriate public primary information sources should be consulted for verification of the information. Although every reasonable effort has been made to assure the accuracy of this data, Napa County makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the data provided herein and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. Napa County assumes no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and assumes no liability for any decisions made or actions taken or not taken by the user of the data in reliance upon any information or data furnished hereunder. Because the GIS data provided is not warranted to be up-to-date, the user should check with the County staff for updated information.</span></p></div></div></div>
catalogPath:
title: PRISM Mean Annual Precipitation 1991_2020
type: Map Service
url:
tags: ["precipitation","Conterminous US"]
culture: en-US
portalUrl:
name: PRISM_Mean_Annual_Precipitation_1991_2020
guid: C27F1802-24AD-4992-8BF2-561AF2D2766C
minScale: 0
spatialReference: WGS_1984_Web_Mercator_Auxiliary_Sphere