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Description: Thiessen Polygons derived from Napa County rain gauge locations layer using the 'Create Thiessen Polygons' geoprocessing tool with the rain gauges layer as input.Gauge information was extracted from OneRain https://onerain.com and provided by Napa County in tabular format for years 2000 to 2025, plus National Oceanic and Atmospheric Administration's (NOAA) National Climatic Data Center (NCDC) and California Department of Water Resources (DWR) California Data Exchange Center. Environmental Science Associates (ESA) derived Thiessen polygons from gauge locations.
Service Item Id: 65f1a2b515be4d3a8549fa807e9f4deb
Copyright Text: OneRain, 2025 adapted by ESA; NOAA NCEI, 2025; CDEC, 2025
Spatial Reference:
102642
(2226)
LatestVCSWkid(0)
Initial Extent:
XMin: 5918370.534267946
YMin: 1715196.2965726685
XMax: 6828112.66279938
YMax: 2247760.666705668
Spatial Reference: 102642
(2226)
LatestVCSWkid(0)
Full Extent:
XMin: 6349281.188374981
YMin: 1825490.442185074
XMax: 6542270.0218847245
YMax: 2088464.3850681633
Spatial Reference: 102642
(2226)
LatestVCSWkid(0)
Units: esriFeet
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Enable Z Defaults: true
Supports ApplyEdits With Global Ids: false
Supports Dynamic Layers: false
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