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California Spotted Owl (CSO) Suitable Habitat
California spotted owl is continuously distributed on the western slope of the Sierra and inhabits elevations ranging from roughly 1,000 to over 7,000 feet. It is a Region 5... -
Shrub Resiliency; Number of Disturbance Events Per 15 Year Intervals Since 1975
Count of short return interval fires (within 15 years) across southern CA (1950-2019) that can be used to identify sites that have experienced frequent fire (e.g. more than one... -
Percent Impervious Surface
This National Land Cover Database (NLCD) product represents urban impervious surfaces as a percentage of developed surface over every 30-meter pixel of California, extracted... -
Laguna Mountains Skipper Habitat Range
The current range represents the boundaries for Laguna Mountains skipper ( Pyrgus ruralis lagunae ) as understood by the United States Fish and Wildlife Service. The critical... -
Northern CA - Large Tree Density - >40" Dbh
Large trees are important to forest managers for multiple reasons: they have a greater likelihood of survival from fire; they are an important source of seed stock; they provide... -
Unemployment
Percentage of the population over the age of 16 that is unemployed and eligible for the labor force. Excludes retirees, students, homemakers, institutionalized persons except... -
Natural Conifer Regeneration Probability
This metric is intended to be used to identify areas where reforestation may be necessary if stakeholders want to reestablish coniferous forests following fire. Conifers in our... -
SDI: Proportion of Max - Zeide 1983
Stand density index (SDI) helps vegetation managers to identify levels of site utilization and competition to determine management scenarios to meet objectives and is often used... -
Density - Snags - 20" - 29.9"
The number of standing dead trees (snags) on the landscape is important to forest managers; high densities of standing dead trees are known to contribute to extreme fire events... -
FSH Fine-Scale Heterogeneity Index
A key component of forest structure descriptions is the spatial heterogeneity (i.e., tree clumps and gaps), which influences vegetation growth, competition, and succession,... -
Low Income Population Concentration - Northern CA
Relative concentration of the estimated number of people in the Northern California region that live in a household defined as "low income." There are multiple ways to define... -
Fire Ignition Probability Human Cause
These rasters depict the predicted human- and lightning-caused ignition probability for the state of California. Ignition is regulated by complex interactions among climate,... -
Ember Load Index
This ember load dataset represents the ember load index (ELI) per pixel, for a given pixel, based on surface and canopy fuel characteristics, climate, and topography within the... -
Heavy Fuels
Emissions (on which the modeled PFIRS and Smoke Spotter smoke plumes are based, and which are generated by the BlueSky Playground) are especially sensitive to changes in the... -
Distribution of Redwood Structure Classes
Coast Redwoods grow in a band from the coast of central California to southern Oregon (thus these data are only in the Northern and Central California Regions). Compared to... -
Annual Biomass Data (2001-2021) - Aboveground Live Biomass 2021
Biomass estimates for shrubland-dominated ecosystems in southern California have, to date, been limited to national or statewide efforts which can underestimate the amount of... -
Canopy Vegetation Height
This layer represents distance between the ground and the top of the canopy. Canopy height is a proxy for aboveground biomass and the amount of foliage that may be consumed in a... -
Dead Carbon
Dead carbon includes dead and down (litter, duff, fine, coarse, and heavy fuels, including 1000+ hour logs) which are inherently unstable due to prevailing fire and decay... -
Northern California Summer Steelhead Distribution
Summer Steelhead Distribution October 2009 Version This dataset depicts observation-based stream-level geographic distribution of anadromous summer-run steelhead trout,... -
California Coastal Chinook Salmon Distribution
This layer was created to aid SWR biologists in establishing Critical Habitat for Chinook in the California Coastal ESU. The layer represents an approximation of Chinook...