Official map layers
Select a parcel to bold matching entries within expanded legends. Rivers, streams, and springs are checked across the visible parcel; other layers are checked at the clicked location.
PerennialIntermittent / ephemeralMapped spring
Red outline with white dashesU.S. Census incorporated-place boundaries. Unincorporated communities and census-designated places are not included.
USGS 3DEP bare-earth slope visualization: gray is flatter, yellow is moderate, and red-brown is steeper. General terrain context only—not a survey, geotechnical assessment, or determination of buildability, drainage, access, or solar potential.
Mapped wetland polygonUSFWS National Wetlands Inventory screening data. Map presence or absence does not establish wetland jurisdiction, boundaries, conditions, or permitting requirements; verify with a site assessment and the appropriate agencies.
Mapped community at tapped location
Loading LANDFIRE class colors…
Swatches show official LANDFIRE class colors. Tap the map to highlight its class in this list. Classes outside Siskiyou may also be listed. USGS/USFS modeled ecological systems, 30 m pixels; not a species inventory or site survey. Individual pixels are not reliable parcel-level evidence.
ForestShrub / scrubGrassland / herbaceousWoody / herbaceous wetlandOpen waterPasture / croplandDeveloped / barrenUSGS/MRLC Annual NLCD 2024, ~30 m pixels. Broad land-cover classes (colors are illustrative); Alt/Option-click the map for the class at a point. Waterway edges and small riparian corridors may be missed. This is not a plant or animal inventory, a wetland delineation, or proof of species presence.
Final designationProposed designationUSFWS screening data for mapped proposed and final critical habitat. Click an area for species and designation status. It does not determine species presence, project effects, permitting, consultation requirements, or legal obligations; verify with USFWS and the applicable Federal Register notice.
AT&TT-MobileVerizonCounty-published coverage as of January 2024. It is modeled coverage, not a guarantee of service, signal strength, data speed, indoor coverage, or emergency calling at a site.
Includes county-published trail alignment and mile markers (visible from zoom 10). Trail route and access conditions can change; consult the PCTA and local land managers before travel.
AgriculturalAG-1 and buffer variantsAG-2 and buffer variants
CommercialC-CC-C-B-10, C-R-B-10, C-U-B-2.5C-C-B-2.5C-HC-R and C-UC-R-B-80
Industrial / open spaceM-L and M-L-B-40M-M and buffer variantsM-HO — Open space
Planned developmentPDPD (C-U)PD (M-M)PD (Ski Park)PD (Chalets)PD (MH)PD (R-R)PD (R-R-B-1)PD (RES-1 variants)PD (RES-3)PD (RES-4)PD (Sw Ponds)
Residential / resourceR-R and most buffer variantsR-R-B-5R-R-MH and buffer variantsRES-1RES-2RES-3 and buffer variantsRES-4 and buffer variantsTP and TP-B-80
Municipal zoningCity and town districts are interwoven where mapped: Dorris, Dunsmuir, Etna, Fort Jones, Montague, Mt. Shasta, Tulelake, Weed, and Yreka. Municipal map dates vary; verify with the governing municipality.
Other mapped areasIncorporated / incorporated ROW (no municipal map available)WetlandsROW / unknown — boundary only
DWR Bulletin 118 basin boundaries—not an aquifer-depth map.
DWR completion reports; click for reported depth, static level, yield, and original record. Locations are often approximate to a one-mile PLSS section.
Unconsolidated depositsVolcanic rockIntrusive igneous rockMetamorphic rockSedimentary rockGeneralized USGS map context—not a groundwater prediction or site investigation.
Very HighHighModerateOther / unclassified
Historic (through 2018)Recent (2019–2025)County incident perimeters. They show mapped fire footprints—not burn severity, current fuels, damage, evacuation status, or insurance availability.
Solid square: inventory pointHollow square: mapped footprint locator (when zoomed out)USGS compiled historical inventories (snow-only avalanches excluded). The polygon records are separate from the dots and may be in different places. Click a filled or hollow square; Alt/Option-click a shaded footprint to inspect it under parcel fills. Footprint edges and dates vary in accuracy. Absence of a record does not imply stable ground.
Special Flood Hazard Area (1% annual chance)0.2% annual chanceUndetermined hazard (Zone D)Other mapped flood zone
Dominant component · shallowest classified horizon
SandFine sandCoarse sand
Loamy fine sandLoamy sandLoamy coarse sand
Very fine sandy loamFine sandy loamSandy loamCoarse sandy loam
LoamSiltSilt loam
Clay loamSandy clay loamSilty clay loamClaySilty clayNot rated / other
Each texture has Sand, Silt, and Clay rows. Tap a map location to highlight its texture and fill in its three reported percentages (— means no location selected; “Not reported” means USDA has no value). Percentages vary by map unit, even within one texture class. This is not a soil test.
PrimeStatewide importanceUniqueLocal importanceGrazing landIrrigated farmlandNonirrigated farmlandCalifornia DOC planning inventory (minimum mapping unit: 10 acres); it is not parcel-specific, zoning, or evidence of active farming, water rights, or development rights.
Large quantity generatorSmall quantity generatorVery small quantity generatorOther handler / corrective-action siteEPA RCRAInfo known handler locations, refreshed nightly. A marker is a regulatory record—not a contamination boundary, release finding, cleanup status, or site-risk determination.
California Energy Commission mapped operational lines. Click a line for reported voltage and owner. Routes are approximate; proximity does not establish service availability, connection rights, capacity, or an easement. Verify with the utility.
California Energy Commission facility locations in Siskiyou County, including records marked retired. Click for energy source and reported capacity. These do not establish operating output, grid access, service availability, or suitability for a parcel.
Recorded fatal motor-vehicle crashes in Siskiyou County, 2015–2024 (2024 initial release; prior years final). One marker per crash, not per death; click for date and road. Locations may be approximate or revised. These past crashes are not a ranking of dangerous intersections or a measure of traffic exposure; absence of a dot does not mean a road is safe. Not all traffic collisions are shown.
FHWA National Bridge Inventory bridges recorded in Siskiyou County. Click for route, crossing, and recorded condition. Inventory locations and conditions are not live closures, passability, legal access, or road-maintenance information.
U.S. Army Corps of Engineers National Inventory of Dams. Click a point for the dam name and inventory details. These are mapped locations—not inundation zones, current operating conditions, safety ratings, or a complete inventory of small structures. Verify with the responsible authority.
Lower-altitude routeUpper-altitude routeFAA charted Instrument Flight Rules (IFR) air traffic service route segments, updated by FAA on an aeronautical chart cycle. Click a line for route identifier and published altitude information. These are available routes, not actual flight tracks, traffic volume, noise exposure, or evidence of aircraft altitude above a property. Not for navigation.
Environmental layers are screening data—not surveys, engineering, buildability, or insurance determinations.