Feedback AboutHelpLogin
HomeAdvanced SearchBrowse
Details

.

Identification Information
Title: Tongass National Forest, Riparian Management Areas (RMA), 2013
Originator: Tongass Fisheries, Hydrology Staff, Forest Fisheries, Hydrology Staff, USFS Tongass National Forest, Forest Fisheries, Hydrology Staff
Publication Date: 20130813
Website URL: http://seakgis.alaska.edu/data/RiparianMgtArea.zip
Resource(Server) URL: http://seakgis03.alaska.edu/arcgis/rest/services/USFS/USFS_RiparianMgtArea/MapServer
Abstract: This feature class contains polygons which depict Riparian Management Areas on the Tongass National Forest. The script is in T:\FS\Reference\GeoTool\r10_tnf\ToolboxDelineation of the Riparian Management Area (RMA).The GIS polygon layer that depicts the Tongass Land Management Plan (TLMP) Standard and Guideline Riparian Management Area is a critical analysis and planning tool for delineating the Riparian Management Area (RMA). The RMA polygons are a product of a script that uses inputs from the Forest Plan Riparian Standards and Guides Appendix D https://fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5367422.pdf, stream lines, soils, and lakes layers to define an initial riparian management area. The delineation methods for the RMA polygon feature have changed in response to changes in our GIS software. This document is the preliminary metadata for the next generation RMA product that meets the needs of the Forest Plan Riparian Standards and Guides Appendix D.History:The original RMA macro was written in 1998 and modified through 2002 by specialists in GIS, Botany and Hydrology. The final macro was titled RMA123 and was written in Arc Macro Language (AML). Changes in GIS software resulted in the model being rewritten in the scripting language Python and the original rationale revisited.Model ComponentsIn general the RMA direction states that the mapped RMA is the “greatest of flood plain, riparian vegetation or soils or soils, riparian associated wetland fens or 1xx feet (the height of one site potential tree)” the site potential tree height varies by site and is tied to the stream process group. Streams supporting anadromous and resident fish (AHMU Classes 1 and 2) fall under the provisions of the Tongass Timber Reform Act (TTRA) and have a “No Cut” or TTRA buffer of 30 meters. In most cases, the mapped RMA is greater than 30 meters due to the site potential tree height provision. The model applies a buffer perpendicular to the stream line (assumed to be the stream centerline) to a distance that varies by its process group and AHMU class. The distance by which each classified channel is mapped is listed in a lookup table that is carried within the SEAKHydro Geodatabase. The lookup table (TLMP_StrmBuf) includes separate columns showing the buffer distance from channel centerline to the bank margin, side-slope length, TTRA buffer, no-cut buffer distance, and wind firm buffer distance.The soils layer has a lookup table that includes a riparian component. Riparian soils are flagged and added directly to the model output. Lakes greater than 3 acres in size are buffered by 30 meters.
Purpose: This cover dataset contains polygons which depict Riparian Management Areas (RMA) used for planning purposes.
Progress: In work
Frequency: Irregular
Time Period of Content
Date Range
Begin Date: 20130813
End Date: 20130828
Currentness: Covers the Entire Tongass National Forest
West Bounding Longitude: -144.668725
East Bounding Longitude: -128.924324
North Bounding Latitude: 60.915304
South Bounding Latitude: 53.951651
Zoom to the resource envelope
Point of Contact
Organization: USFS Tongass National Forest
Person: Tongass Fish, Hydrology Staff
Contact Position: Forest Fish, Hydrology Staff
Address Type: mailing and physical
Address: 648 Mission Street, Federal Building
City: Ketchikan
State: AK
Postal Code: 99901-6591
Telephone: 907-225-3101
Fax: 907-228-6215
Email: gisr10tongassnf@fs.fed.us
Browse Graphic
Browse Graphic URL: http://seakgis.alaska.edu/data/thumbnails/RiparianMgtArea.jpg
Browse Graphic Caption: Regional overview of the dataset.
Browse Graphic Type: JPEG
Constraints
Access: Other Constraints
Use: 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 land 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
Theme Keywords
Theme Reference: ISO 19115 Topic Categories
Theme Topics: Inland Water Resources
Keywords
Theme Reference: None
Theme Keywords: Riparian Management Areas, rma, rivers, lakes, habitat, water, area, streams, river, management, wetlands, conservation, riparian
Place Keyword Thesaurus: None
Place Keyword: Tongass National Forest, Alaska, Southeast
Data Quality Information
Logical Consistency Report: This feature was created using a phython script, and it used the exisiting streams and various buffers were applied. There should be no lines of intersection, but only where intended, and all polygons should be closed.
Completeness Report: Not tested at this time and there is no report available
Processing Steps
Step 1 Process Description: Here is the header in the script: # Purpose: generate Riparian Management Area layer on clipped project data # # # Inputs: 1) The following layers, clipped to the project extent: # Stream_LN # Lake_PL # Soil # Tables: # common_soil_LUT (table found in Terrestrial library gdb) # TLMP_StrmBuf (table found in SEAKHydro library gdb) # 2) An output path where the geodatabase will be created for the # scratch workspace and final output # Output: A feature class called RiparianMgtArea 3) Topology was run for slivers and there were a series of dissolves. If you take a look at the metadata for the output layer, you will see the full geoprocessing that was done, along with any parameters for each process step. 4) WET_HAB comes directly from the common_soil_lut in the Terrestrial database. Any metadata about that field should come from the metadata that exists for that table. 5) Wind firm buffers were not included in this version of the model.
Step 1 Process Date: 20130818
Step 2 Process Description: Buffer StreamLayer C:\WorkSpace\temp\RMA\ARD\rma_temp.gdb\StreamTemp SEAKHydro.DBO.TLMP_StrmBuf.NC_BUF FULL ROUND LIST ARD.StreamClass
Step 2 Process Date: 20130818
Step 3 Process Description: Dissolve StreamClipLyr C:\WorkSpace\temp\RMA\ARD\rma_temp.gdb\StreamClass1 ARD_StreamClass # SINGLE_PART UNSPLIT_LINES
Step 3 Process Date: 20130818
Spatial Reference Information
Geodetic Model
Horizontal Datum Name: D North American 1983
Ellipsoid Name: GRS 1980
Semi-major Axis: 6378137.0
Denominator of Flattening Ratio: 298.257222101
Distribution Information
Distribution Liability: 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 land 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.
Organization: USFS, Tongass National Forest
Person: Nida Crumley
Contact Position: GIS Database Administrator
Address Type: physical
Address: 204 Siginaka Way
City: Sitka
State: Alaska
Postal Code: 99835-7316
Telephone: 907-747-6671
Fax: 907-747-4331
Email: ncrumley@fs.fed.us
Contact Instruction: Mon - Fri
Metadata Reference Information
Metadata Creation Date: 20141210
Organization: USFS, Tongass National Forest
Person: Nida Crumley
Contact Position: GIS Database Administrator
Address Type: physical
Address: 204 Siginaka Way
City: Sitka
State: Alaska
Postal Code: 99835-7316
Telephone: 907-747-6671
Fax: 907-747-4331
Email: ncrumley@fs.fed.us
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
/geoportal/rest/document?f=html&id=%7B09E46FB9-E0D0-4067-B8B5-A9B91E0D53AF%7D
This Geoportal was built using the Geoportal Server. Please read the Disclaimer or Contact Us.