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File Overview – Color Aerial Photography of Headwaters Subunit (NAIP)
This imagery is published by the USDA FSA Aerial Photography Field Office under the National Agriculture Imagery Program (NAIP) in order to provide current information about agricultural conditions in support of USDA farm programs. The State of California makes this imagery available free of charge to the public on the Cal-Atlas website.
File OVERVIEW: Assessment Subunits and Corresponding Hydrologic Areas
Numeric identifiers of the Hydrologic Areas represent planning units from the interagency Calwater 2.2.1 classification system. The five-digit number is the DWR RBUA code from the Watershed Boundary Dataset. For more detail, please see http://www.ncgc.nrcs.usda.gov/products/ datasets/watershed/datainfo.html
File Overview: Color Aerial Photography of Study Area (NAIP)
This imagery is published by the USDA FSA Aerial Photography Field Office under the National Agriculture Imagery Program (NAIP) in order to provide current information about agricultural conditions in support of USDA farm programs. The State of California makes this imagery available free of charge to the public on the Cal-Atlas website.
File Overview: Color Aerial Photography of Millerton Subunit (NAIP)
This imagery is published by the USDA FSA Aerial Photography Field Office under the National Agriculture Imagery Program (NAIP) in order to provide current information about agricultural conditions in support of USDA farm programs. The State of California makes this imagery available free of charge to the public on the Cal-Atlas website.
File Overview: Color Aerial Photography of Mountain Subunit (NAIP)
This imagery is published by the USDA FSA Aerial Photography Field Office under the National Agriculture Imagery Program (NAIP) in order to provide current information about agricultural conditions in support of USDA farm programs. The State of California makes this imagery available free of charge to the public on the Cal-Atlas website.
File HYDROLOGY: Water Features of Headwaters Subunit
Map of water features in headwaters subunit.
File HYDROLOGY: Water Features of Millerton Subunit
Map of water features in the Millerton subunit.
File HYDROLOGY: Water Features of Mountain Subunit
This is a map of the water features of the mountain subunit.
File GEOLOGY AND SOILS: Geology and Rock Types within Study Area
A map of geology and rock types in the study area: 76% Mesozoic granitic rocks (granodiorite, quartz monzonite) 8% Quaternary glacial deposits (glacial drift) 7% Mesozoic volcanic rocks (felsic and intermediate volcanic rock) 3% Pre-Cenozoic metasedimentary and metavolcanic rocks (schist, gneiss) 2% Tertiary volcanic flow rocks (tephrite, trachybasalt) 1% Undivided pre-Cenozoic metavolcanic rocks (basalt, serpentine) 1% Recent (Holocene) volcanic flow rocks (rhyolite, andesite) 1% Pre-Cenozoic granitic and metamorphic rocks (plutonic rock, gneiss) 1% Other (alluvium, argillite, conglomerate, gabbro, limestone, sandstone) 2% Water.
File GEOLOGY AND SOILS: Important Farmland in Millerton Subunit
The Farmland Mapping and Monitoring Program (FMMP) rates agricultural lands according to soil quality and irrigation status, updated every two years and generally extending to the Sierra Nevada foothills. For more details, see www.conservation.ca.gov/dlrp/fmmp. Also included on this map as important farmland are soils of prime and statewide importance according to NRCS.
File Geology and Soils: Soils Sensitive to Erosion on National Forest Lands (USFS WINS 1997)
A map of soils sensitive to erosion on national forest lands.
File Ecology: California Protected Lands
A map of California protected lands.
File Listed Species and USFS Critical Aquatic Refuges
A map of listed species and USFS critical aquatic refuges in the study area.
File ECOLOGY: Natural Resource Project Inventory Sites within Study Area
NRPI is a comprehensive statewide database containing project related data on California's natural resources as of 2005. For more detail about the projects identified on this map, paste the below URL into a browser. Replace the X's with the project number given in the Key found in the upper right corner of this map: http://www.ice.ucdavis.edu/nrpi/ NRPIDescription.asp?ProjectPK=XXX
File Climate: Average Annual Precipitation for Years 1971-2000
The average annual precipitation for years 1971-2000 in the study area.
File Hazards: FEMA National Flood Hazard Layer
Flood zones are geographic areas that the FEMA has defined according to varying levels of flood risk. These zones are depicted on a community's Flood Insurance Rate Map (FIRM) or Flood Hazard Boundary Map. Each zone reflects the severity or type of flooding in the area. The contrast between Zones D and X in the upper weatersheds reflects the Fresno and Madera County administrative boundaries. Flood zone maps (FIRM) affect insurance rates of property owners.
File Hazards: Fire Hazard Severity Zones (CalFire DRAFT 2007)
These data and maps represent the DRAFT model results for Fire Hazard Severity Zoning (FHSZ) developed in January 2007 - they do not provide actual recommendations on zoning and are not necessarily current. The data and maps issued in January 2007 cover Federal Responsibility Area (FRA), State Responsibility Area (SRA) and Local Responsibility Areas (LRA)." (Quoted from CalFire) For more information on Hazard Mapping and associated Building Codes, please see http://www.fire.ca.gov/ fire_protection/fire_protection_prevention_planning_wildland.php.
File Hazards: Fire Threat (CalFire)
Statewide GIS layer (GRID format) of fire threat, which combines expected fire frequency with potential fire behavior to create 4 threat classes (v05_1)." (Quoted from CalFire) For more information on Hazard Mapping and associated Building Codes, please see http://www.fire.ca.gov/ fire_protection/fire_protection_prevention_planning_wildland.php.
File Hazards: Mine Sites and Principal Areas of Potential Mine Pollution
The PAMP (Principal Areas of Mine Pollution) dataset is a compilation of 2,422 mining operations and their potential water-quality problems. This information was originally compiled in 1972 by the Division of Mines and Geology for the State Water Resources Control Board. It was published in a series of volumes of tabular data. The data set includes operations where production exceeded $100,000 or where other factors indicated a high potential for pollution." (Quoted from Dept of Conservation)
File Hazards: Steep Slopes and Roadways
A map of the steep slopes and roadways in the study area.
File Hazards: Steep Slopes and Major Roadways
An additional map of steep slopes and major roadways.
File Vegetation and Fire: Fuel Rank (CalFire)
CDF has developed a fuel assessment methodology for the California Fire Plan. The fuel ranking methodology assigns ranks based on expected fire behavior for unique combinations of topography and vegetative fuels under a given severe weather condition (wind speed, humidity, and temperature)." (Quoted from CalFire) This dataset is used by CalFire to identify and prioritize pre-fire projects that reduce costs and losses from large fire events. For a detailed description of the data and methods, please see FRAP website Surface Fuels Maps & Data at: http://frap.cdf.ca.gov/data/fire_data/fuels/fuelsfr.html.
File Vegetation and Fire: Housing Density, Powerlines, and Historic Fire Perimeters
A map representing housing density, powerlines, and historic fire perimeters in the study area.
File Vegetation Management and Fire Safety: Existing Vegetation in the Sierra National Forest Lands (USFS)
This vegetation dataset was created for national forest lands using remote sensing techniques. The dataset is used by the Forest Service for decisions about land management issues such as forest-wide planning efforts, wildlife habitat mapping and fire risk assessment.
File Vegetation and Fire: Wildland Urban Intermix (USFS 2005)
This dataset contains polygon features of Wildland Urban Intermix zones. These zones (WUI) are areas where human habitation is mixed with areas of flammable wildland vegetation. Fire response in these areas may be state or federal depending on the location. See http://www.fs.fed.us/r5/rsl/projects/gis/ data/calcovs/WildlandUrbanIntermix05_1.html.
File Invasive Species and Pest Management: USFS Invasive Species Management Sites
These point occurrences do not reflect acreage but only represent locations of invasive species management sites as reported by the Sierra National Forest.
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