USDA Forest Service
20240322
134105
Aerial Fire Retardant Hydrographic Avoidance Areas: Aquatic - Region 5
vector digital data
http://data.fs.usda.gov/geodata/edw/datasets.php
Aerial retardant avoidance area for hydrographic feature data are based on high resolution National Hydrographic Dataset (NHD) produced by USGS and available from the USFS. Forests and/or regions have had the opportunity to modify the default NHD water representation (300ft buffer from all water features) for their areas of interest to accurately represent aerial fire retardant avoidance areas as described in the 2011 Record of Decision for the Nationwide Aerial Application of Fire Retardant on National Forest System Land EIS. These changes have been integrated into this dataset depicting aerial fire retardant avoidance areas for hydrographic features. Note that this data is current for 2023.
This layer depicts aerial fire retardant hydrographic avoidance areas for use in digital, hardcopy, and online mapping to support the 2011 Record of Decision for the Nationwide Aerial Application of Fire Retardant on National Forest System Land EIS. This data was originally used in the creation of 2011 retardant avoidance map products, but has now been locally modified to create the current 2023 suite of avoidance products.
This layer is an aggregation of Threatened, Endangered, Pending, and Candidate federally-listed species locations where aerial fire retardant must be avoided. Annually, a formal request for updates is provided to all national forests who use aerial fire retardant to update their locations of avoidance. When complete, all individual forests' data are aggregated together into a national layer while retaining a UnitID attribute to specify features within a particular national forest. Further, any forest may update their data at any time, and an automated process within the Enterprise Data Center automatically replaces any new data in this national layer.
20190101
publication date
Annually
-124.091729
-116.381012
42.083695
32.658156
None
Hydrographic avoidance
Aerial Fire Retardant Avoidance
ISO 19115 Topic Categories
environment
None
National Forest System Lands in Regions 1
2
3
4
5
6
8
9.
None
The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, reliability, completeness or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.
USFS Chief Information Office, Enterprise Data Warehouse
physical
Washington
DC
20250
US
Please send an e-mail to the address below.
data@fs.fed.us
Timothy B Love, USDA Forest Service. U.S. Geological Survey (USGS)
Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388
None.
Data is complete as of publication.
Generally the source information used to record spatial locations are from: 1) on-screen digitizing with a georeferenced topographic or image background; or 2) GPS field collected positions.
U.S. Forest Service
unpublished material
Aerial Fire Retardant Avoidance Areas
24000
onLine
20151122
publication date
AFRAA
Locational information for where aerial fire retardant must be avoided.
The following process was used to develop the hydrographic areas to be avoided by aerial fire retardant. Initially, all intermittent/ephemeral and perennial features were buffered by 300 feet by the Forest/Region units. Subsequently, Forest/Region units may have extended these buffers locally based on their requirements. There may be overlapping features that have been created during the buffering process, so one must dissolve features before calculating any area values. Data is symbolized by FCODE. Using the FCODE attribute, streams/rivers/waterbodies are categorized into perennial and intermittent/ephemeral types. Avoidance features (streams and rivers) with FCODES 46003 and 46007, as well as features (lakes and other waterbody) with FCODES 39001, 39005, 39006, 43614, 46601 are considered intermittent/ephemeral features. All other FCODES are considered to be perennial features. All underground and covered water features (e.g., pipelines) are excluded. When symbolizing this information, perennial features should be drawn on top of intermittent/ephemeral features to give the proper message. Data displays at scales larger than 1:1,250,000. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
20150101
Vector
GT-polygon composed of chains
19501
S_R05.AFRAA_Hydro
Feature Class: A collection of geographic features with the same geometry type (such as point, line, or polygon), the same attributes, and the same spatial reference
ESRI
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
FCODE
USGS Feature Code
USGS
numerical code
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
SHAPE.AREA
Area of feature in internal units squared.
ESRI
Area of feature in internal units squared.
SHAPE.LEN
Length of feature in internal units.
ESRI
Length of feature in internal units.
USFS Chief Information Office, Enterprise Data Warehouse
physical
Washington
DC
20250
Please send an e-mail to the address below.
data@fs.fed.us
The U.S. Forest Service makes no warranty, express or implied, nor assumes any liability or responsibility for the accuracy, reliability, completeness, or utility of these geospatial data or for the improper or incorrect use of those data. The data are dynamic and may change over time. The user is responsible for verifying the limitations of the geospatial data and for using the data accordingly.
20230331
USFS Chief Information Office, Enterprise Data Warehouse
physical
Washington
DC
20250
Please send an e-mail to the address below.
data@fs.fed.us
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time