The Nevada County Roads data layer is a compilation of roads from three major sources: GPS collection, TNF data, and digitized segments. The roads layer is actively maintained by the Nevada County GIS Division.Contact Nevada County GIS for assistance.

Fire Districts in Nevada County are independent special districts that provides Fire Protection and Emergency Response. This includes all city and unincorporated areas that don't fall under state and federal responsibility areas.

This shapefile contains tax rate area (TRA) boundaries in Nevada County for the specified assessment roll year. Boundary alignment is based on the 2020 county parcel map. A tax rate area (TRA) is a geographic area within the jurisdiction of a unique combination of cities, schools, and revenue districts that utilize the regular city or county assessment roll, per Government Code 54900. Each TRA is assigned a six-digit numeric identifier, referred to as a TRA number. TRA = tax rate area number

Tax rate area boundaries and related data based on changes filed with the Board of Equalization per Government Code 54900 for the specified assessment roll year. The data included in this map is maintained by the California State Board of Equalization and may differ slightly from the data published by other agencies. BOE_TRA layer = tax rate area boundaries and the assigned TRA number for the specified assessment roll year; BOE_Changes layer = boundary changes filed with the Board of Equalization for the specified assessment roll year; Data Table (C##_YYYY) = tax rate area numbers and related districts for the specified assessment roll year

The Board of Supervisors is the legislative and executive body of county government. There are five Supervisor Districts in Nevada County, California. District boundaries are updated based on the 2020 census redistricting.

Tax rate area boundaries and related data based on changes filed with the Board of Equalization per Government Code 54900 for the specified assessment roll year. The data included in this map is maintained by the California State Board of Equalization and may differ slightly from the data published by other agencies. BOE_TRA layer = tax rate area boundaries and the assigned TRA number for the specified assessment roll year; BOE_Changes layer = boundary changes filed with the Board of Equalization for the specified assessment roll year; Data Table (C##_YYYY) = tax rate area numbers and related districts for the specified assessment roll year

Trails around Nevada County from a variety of sources, including the Tahoe National Forest, Truckee, and Grass Valley.This is consumed by Open Data Portal, and the Recreation Viewer App.

This is the public Ready Nevada County Dashboard, developed by the County of Nevada Office of Emergency Services and GIS Department.This is a tabbed Story Map that contains multiple applications:Evacuation and Wildfire DashboardLive Fire Webcams ViewerEvacuation Route Pre-PlannerAdditional applications and functionality will be developed on a rolling basis, as needs arise.

This zip code layer was constructed by Nevada County GIS from voter registration rolls and Assessor Mailing Addresses. It is the best available data, but boundaries are not precise. Zip Codes 95712 (Chicago Park) and 95924 (Cedar Ridge) are for the US Post Office and PO boxes only. In Truckee, there is a 96160 Zip Code that is for PO Boxes only. This zip code is not included in this layer because the Truckee Post Office itself is zip 96161.

Tax rate area boundaries and related data based on changes filed with the Board of Equalization per Government Code 54900 for the specified assessment roll year. The data included in this map is maintained by the California State Board of Equalization and may differ slightly from the data published by other agencies. BOE_TRA layer = tax rate area boundaries and the assigned TRA number for the specified assessment roll year; BOE_Changes layer = boundary changes filed with the Board of Equalization for the specified assessment roll year; Data Table (C##_YYYY) = tax rate area numbers and related districts for the specified assessment roll year

These data are point locations where hawks and owls (raptors) were detected during playback surveys conducted between 28 March 2005 and 21 July 2005 along 36 randomly selected watercourses in the foothills of the Sierra Nevada Mountain Range. These data represent 260 positive responses for several species of hawks and owls to the playback surveys. This study was done by the North Central Region of the California Department of Fish and Game with support from the Resource Assessment Program. These data represent the point locations where individual hawks and owls were detected based on geographic algorithms using estimated distances and compass bearings from fixed points along public roads. Methodology: Playback surveys using MP3 players and battery-powered speakers were done to elicit vocal or behavioral responses from hawks and owls from fixed points along public roads in the foothills of the Sierra Nevada. The surveys were done along 36 randomly selected watercourses, and one or three surveys were done at the points between March and July 2005. Seventeen watercourses had one survey while 19 watercourses had three surveys. Survey periods were (1) March to mid-April, (2) late April to late May, and (3) June to July. Watercourses with one survey were surveyed during the March to mid-April period; watercourses with one survey were dropped from the study after the first survey due to logistic and manpower constraints. Each watercourse had 3-5 fixed points that were between 500-1,000 meters apart to ensure spatial independence. Hawk surveys were conducted between 8:00 am and 5:00 pm, while owl surveys were conducted between 8:30 pm and 4:15 am. Playback surveys were done with fixed sequences of species calls as follows: (1) for hawks, sharp-shinned hawks, Cooper's hawks, and red-shouldered hawks; and (2) for owls, flammulated owl (starting in May), northern saw-whet owl, northern pygmy-owl, western screech-owl, long-eared owl, and great-horned owl. No calls were done for red-tailed hawks, osprey, Swainson's hawks, or barn owls which were detected during the surveys and included in these data. The duration of the playbacks for each species consisted of a 1-minute silent period, a 4-minute playback period with 4 repeated sequences of 30 seconds of vocalizations followed by 30 seconds of silence, and a 1-minute silent period. The speaker initially faced North, and was then rotated South, West, and East with successive 30-second playback/30-second silence periods. Detected animals were visually or aurally located and identified. Laser rangefinders were used to estimate distances, while compasses were used to derive compass bearings. Habitats of detected animals were determined from field observations during the day for hawks or from aerial photographs with owls based on knowledge of field conditions at the fixed points. A GIS algorithm was used to locate the estimated field locations based on the estimated distances and compass bearings, and then habitats were verified with aerial photographs. The sex and age of each detected individual was determined if possible, and observers rated the confidence of their determination of the number of individuals, species type, sex and age of each detection.

These areas are the parks that are in Nevada County.

This dataset (SRA22_2) represents SRA status as of September 1st, 2022. 22_2 is largely the same as 22_1, with the exception of a significant error correction in Orange County, two large annexations in Nevada County, as well as corrections to any data errors discovered during the editing process.

This parcel layer contains the parcel's situs (physical) address maintained by the Planning Department.The parcel geometry provides a rough representation of tax parcels in relation to one another and to district boundaries. Parcels with multiple site addresses are represented by overlapping polygons.Contact Nevada County GIS for assistance.

Tax rate area boundaries and related data based on changes filed with the Board of Equalization per Government Code 54900 for the specified assessment roll year. The data included in this map is maintained by the California State Board of Equalization and may differ slightly from the data published by other agencies. BOE_TRA layer = tax rate area boundaries and the assigned TRA number for the specified assessment roll year; BOE_Changes layer = boundary changes filed with the Board of Equalization for the specified assessment roll year; Data Table (C##_YYYY) = tax rate area numbers and related districts for the specified assessment roll year

Boundary Sierra Nevada Conservancy (SNC) boundary. The boundary was mapped to correspond with statute AB 2600 (2004) and as re-defined in SB 208 (2022). Work on the boundary was completed by CalFire, GreenInfo Network, and the California Department of Fish and Game. Meets and bounds description of the area as defined in statute: PRC Section 33302 (f) defines the Sierra Nevada Region as the area lying within the Counties of Alpine, Amador, Butte, Calaveras, El Dorado, Fresno, Inyo, Kern, Lassen, Madera, Mariposa, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Tehama, Trinity, Tulare, Tuolumne, and Yuba, described as the area bounded as follows: On the east by the eastern boundary of the State of California; the crest of the White/Inyo ranges; and State Routes 395 and 14 south of Olancha; on the south by State Route 58, Tehachapi Creek, and Caliente Creek; on the west by the line of 1,250 feet above sea level from Caliente Creek to the Kern/Tulare County line; the lower level of the western slope’s blue oak woodland, from the Kern/Tulare County line to the Sacramento River near the mouth of Seven-Mile Creek north of Red Bluff; the Sacramento River from Seven-Mile Creek north to Cow Creek below Redding; Cow Creek, Little Cow Creek, Dry Creek, and up to the southern boundary of the Pit River watershed where Bear Creek Mountain Road and Dry Creek Road intersect; the southern boundary of the Pit River watershed; the western boundary of the upper Trinity watershed in the County of Trinity; on the north by the boundary of the upper Trinity watershed in the County of Trinity and the upper Sacramento, McCloud, and Pit River watersheds in the County of Siskiyou; and within the County of Modoc, the easterly boundary of the Klamath River watershed; and on the north in the County of Modoc by the northern boundary of the State of California; excluding both of the following: (1) The Lake Tahoe Region, as described in Section 6605.5 of the Government Code, where it is defined as "region" (2) The San Joaquin River Parkway, as described in Section 32510.According to GreenInfo Network and the California Department of Fish and Game, the blue oak woodland used to define a portion of the Sierra Nevada Conservancy's western boundary was delineated using referenced vegetation and imagery data.Subregions“Subregions” means the six subregions in which the Sierra Nevada Region is located, described as follows:(1) The northwest Sierra subregion, comprising the Counties of Shasta, Siskiyou, Tehama, and Trinity.(2) The northeast Sierra subregion, comprising the Counties of Lassen, Modoc, Plumas, and Sierra.(3) The north central Sierra subregion, comprising the Counties of Butte, Nevada, Placer, and Yuba.(4) The south central Sierra subregion, comprising the Counties of Amador, Calaveras, El Dorado, and Tuolumne.(5) The southeast Sierra subregion, comprising the Counties of Alpine, Inyo, Kern, and Mono.(6) The southwest Sierra subregion, comprising the Counties of Fresno, Madera, Mariposa, and Tulare.

This map layer depicts the Sierra Nevada Conservancy's Watershed Improvement Program (WIP) Administrative Boundaries, which are known as Watershed Assessment Areas (AA). These boundaries are further delineated by California counties and the National Hydrography Dataset HUC 8.

This dataset comprises various jurisdiction and planning geospatial layers for the Tahoe Basin, including the TRPA Boundary, urban areas, town centers, special planning districts, wildland urban interface (WUI), eastside-westside forest types boundary, area plan, CP and PAS boundaries, special areas, regional land use, scenic corridor, scenic viewpoints, schools, City of South Lake Tahoe, county boundaries, peaks, cities, improvement and utility districts, water service area boundaries, fire districts, forest management zones, transfer ratio, town center with buffer, flyover zone, bonus unit boundary, districts, and areas zoned for multi-family use.Spatial Reference: NAD83 / UTM zone 10N (26910)Area Covered: Tahoe Basin, Nevada, California

The USGS Protected Areas Database of the United States (PAD-US) is the nation's inventory of protected areas, including public open space and voluntarily provided, private protected areas, identified as an A-16 National Geospatial Data Asset in the Cadastral Theme (http://www.fgdc.gov/ngda-reports/NGDA_Datasets.html). PAD-US is an ongoing project with several published versions of a spatial database of areas dedicated to the preservation of biological diversity, and other natural, recreational or cultural uses, managed for these purposes through legal or other effective means. The geodatabase maps and describes public open space and other protected areas. Most areas are public lands owned in fee; however, long-term easements, leases, and agreements or administrative designations documented in agency management plans may be included. The PAD-US database strives to be a complete “best available” inventory of protected areas (lands and waters) including data provided by managing agencies and organizations. The dataset is built in collaboration with several partners and data providers (http://gapanalysis.usgs.gov/padus/stewards/). See Supplemental Information Section of this metadata record for more information on partnerships and links to major partner organizations. As this dataset is a compilation of many data sets; data completeness, accuracy, and scale may vary. Federal and state data are generally complete, while local government and private protected area coverage is about 50% complete, and depends on data management capacity in the state. For completeness estimates by state: http://www.protectedlands.net/partners. As the federal and state data are reasonably complete; focus is shifting to completing the inventory of local gov and voluntarily provided, private protected areas. The PAD-US geodatabase contains over twenty-five attributes and four feature classes to support data management, queries, web mapping services and analyses: Marine Protected Areas (MPA), Fee, Easements and Combined. The data contained in the MPA Feature class are provided directly by the National Oceanic and Atmospheric Administration (NOAA) Marine Protected Areas Center (MPA, http://marineprotectedareas.noaa.gov ) tracking the National Marine Protected Areas System. The Easements feature class contains data provided directly from the National Conservation Easement Database (NCED, http://conservationeasement.us ) The MPA and Easement feature classes contain some attributes unique to the sole source databases tracking them (e.g. Easement Holder Name from NCED, Protection Level from NOAA MPA Inventory). The "Combined" feature class integrates all fee, easement and MPA features as the best available national inventory of protected areas in the standard PAD-US framework. In addition to geographic boundaries, PAD-US describes the protection mechanism category (e.g. fee, easement, designation, other), owner and managing agency, designation type, unit name, area, public access and state name in a suite of standardized fields. An informative set of references (i.e. Aggregator Source, GIS Source, GIS Source Date) and "local" or source data fields provide a transparent link between standardized PAD-US fields and information from authoritative data sources. The areas in PAD-US are also assigned conservation measures that assess management intent to permanently protect biological diversity: the nationally relevant "GAP Status Code" and global "IUCN Category" standard. A wealth of attributes facilitates a wide variety of data analyses and creates a context for data to be used at local, regional, state, national and international scales. More information about specific updates and changes to this PAD-US version can be found in the Data Quality Information section of this metadata record as well as on the PAD-US website, http://gapanalysis.usgs.gov/padus/data/history/.) Due to the completeness and complexity of these data, it is highly recommended to review the Supplemental Information Section of the metadata record as well as the Data Use Constraints, to better understand data partnerships as well as see tips and ideas of appropriate uses of the data and how to parse out the data that you are looking for. For more information regarding the PAD-US dataset please visit, http://gapanalysis.usgs.gov/padus/. To find more data resources as well as view example analysis performed using PAD-US data visit, http://gapanalysis.usgs.gov/padus/resources/. The PAD-US dataset and data standard are compiled and maintained by the USGS Gap Analysis Program, http://gapanalysis.usgs.gov/ . For more information about data standards and how the data are aggregated please review the “Standards and Methods Manual for PAD-US,” http://gapanalysis.usgs.gov/padus/data/standards/ .

This shapefile contains polygons representing areas that had a change to the tax rate area number or boundary according to Statement of Boundary Changes filed with the California State Board of Equalization, per Government Code 54900. The change number refers to the Statement of Boundary Change documents on file with the California State Board of Equalization-Tax Area Services Section. CHG_NO = Board of Equalization (BOE) file number