Polygon RS-FRIS [Washington (State)]
WaTech Geospatial Program Office · 2025 Full Details
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- Title
- Polygon RS-FRIS [Washington (State)]
- Description
- RS-FRIS is a remote-sensing based forest inventory for WA DNR State Trust lands. RS-FRIS predicts forest conditions using statistical models that relate field measurements to three-dimensional remotely-sensed data (DAP and LiDAR point clouds). Forest metrics are predicted at a scale of 1/10th acre and stored as rasters. The attributes of each RIU are calculated as the mean of the raster cell values that fall within each polygon. Note: origin year and age are exceptions, and are based on the median value. RS-FRIS 5.4 was constructed using remote-sensing data collected in 2021 and 2022. Version 5.4 incorporates depletions for selected completed harvest types through 2025-08-31. Last edit date: 2025-06-09 Name Description Units RIU_ID Unique identifier for each inventory unit. n/a LAND_COV_CD Land cover code. n/a LAND_COV_NM Land cover name. n/a AGE Number of years since the stand was initiated; a composite of known dates (where recorded in inventory data) and predicted dates (where not recorded in historical inventory data). Calculated as CURRENT YEAR - ORIGIN_YEAR. years ORIGIN_YEAR Year at which a stand was re-initiated, a composite of known dates (where recorded in inventory data) and predicted dates (where not recorded in historical inventory data). Based on the median of raster cell values. year BA Predicted basal area. square feet / acre BA_4 Predicted basal area of trees > 4" DBH. square feet / acre BA_4_CONIFER Predicted basal area of trees > 4" DBH which are of a conifer species. square feet / acre BA_4_HWD Predicted basal area of trees > 4" DBH which are of a hardwood species. square feet / acre BA_6 Predicted basal area of trees > 6" DBH. square feet / acre BA_T100 Predicted basal area of the 100 largest trees per acre. square feet / acre BAP_HWD Predicted percent of trees which are of a hardwood species. percent (0-100) BFVOL_GROSS Predicted gross board-foot volume. Values do not account for defect deductions. board feet / acre BFVOL_NET Predicted net board-foot volume. board feet / acre BIOMASS_ALL Predicted above-ground biomass (live and dead). metric tonnes / ac BIOMASS_LIVE Predicted above-ground biomass (live). metric tonnes / ac CANOPY_LAYERS Predicted count of distinct canopy layers. Units are continuous despite measurements being ordinal. count CARBON_ALL Predicted above-ground carbon (live and dead). metric tonnes / ac CARBON_LIVE Predicted above-ground carbon (live). metric tonnes / ac CFVOL_DDWM Predicted cubic foot volume of down and dead woody materials. cubic feet / acre CFVOL_TOTAL Predicted total cubic-foot volume. This value does not account for merchantability or defect. cubic feet / acre CLOSURE Predicted canopy closure. percent (0-100) COVER Predicted canopy cover. percent (0-100) HT_LOREY Predicted Lorey height. Lorey height is basal-area weighted mean height. feet HT_T40 Predicted height of the 40 largest trees per acre. feet HT_T100 Predicted mean height of the 100 largest trees per acre. feet HTMAX Predicted maximum tree height. feet QMD Predicted quadratic mean diameter. inches QMD_6 Predicted quadratic mean diameter for trees > 6" DBH. inches QMD_T100 Predicted quadratic mean diameter for top 100 trees per acre. inches RD Predicted Curtis relative density (RD) unitless RD_6 Predicted Curtis relative density (RD) for trees > 6" DBH unitless RD_SUM Predicted Curtis relative density (RD), summation method unitless SDI_SUM Predicted Reineke's Stand Density Index (SDI), summation method trees / acre SDI_SUM_4 Predicted Reineke's Stand Density Index (SDI), summation method, for trees > 4" DBH. trees / acre SDI_DF_E Modeled maximum stand density index, Douglas-fir, eastern WA. 10" qmd. trees / acre SDI_GF_E Modeled maximum stand density index, Grand-fir, eastern WA. 10" qmd. trees / acre SDI_LP_E Modeled maximum stand density index, Lodgepole pine, eastern WA. 10" qmd. trees / acre SDI_PP_E Modeled maximum stand density index, Ponderosa pine, eastern WA. 10" qmd. trees / acre SDI_WL_E Modeled maximum stand density index,Western larch, eastern WA. 10" qmd. trees / acre SDI_DF_W Modeled maximum stand density index, Douglas-fir, western WA. 10" qmd. trees / acre SDI_WH_W Modeled maximum stand density index, Western hemlock, western WA. 10" qmd. trees / acre SNAG_ACRE_15 Predicted number of snags per acre > 15" DBH. count / acre SNAG_ACRE_20 Predicted number of snags per acre > 20" DBH. count / acre SNAG_ACRE_21 Predicted number of snags per acre > 21" DBH. count / acre SNAG_ACRE_30 Predicted number of snags per acre > 30" DBH. count / acre SPECIES1 Primary species n/a SPECIES2 Secondary species n/a TREE_ACRE Predicted number of trees per acre. count / acre TREE_ACRE_4 Predicted number of trees per acre > 4" DBH. count / acre TREE_ACRE_4_CONIFER Predicted number of trees per acre > 4" DBH which are conifer. count / acre TREE_ACRE_6 Predicted number of trees per acre > 6" DBH. count / acre TREE_ACRE_8 Predicted number of trees per acre > 8" DBH. count / acre TREE_ACRE_11 Predicted number of trees per acre > 11" DBH. count / acre TREE_ACRE_20 Predicted number of trees per acre > 20" DBH. count / acre TREE_ACRE_21 Predicted number of trees per acre > 21" DBH. count / acre TREE_ACRE_30 Predicted number of trees per acre > 30" DBH. count / acre TREE_ACRE_31 Predicted number of trees per acre > 31" DBH. count / acre RS_COVERED Description of the extent of RS-FRIS raster coverage within inventory unit (NONE, PARTIAL, or FULL). n/a RS_COVERED_PCT Percent (0 to 100) of the inventory unit with RS-FRIS raster coverage. percent (0-100) RS_FRIS_POLY_ACRES Acres of RS-FRIS polygon. acres
- Creator
- Washington State Department of Natural Resources
- Publisher
- WaTech Geospatial Program Office
- Temporal Coverage
- Last Modified: 2025-10-14
- Date Issued
- 2021-09-02
- Rights
- The Washington State Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR
- Access Rights
- Public
- Format
- ArcGIS DynamicMapLayer
- Language
- English
- Date Added
- August 10, 2025
- Provenance Statement
- The metadata for this resource was last retrieved from State of Washington Geospatial Open Data Portal on 2025-11-04.
Resource Class
Resource Type
Place
Local Collection
Cite and Reference
-
Citation
Washington State Department of Natural Resources (2021). Polygon RS-FRIS [Washington (State)]. WaTech Geospatial Program Office. https://geo.wa.gov/datasets/wadnr::polygon-rs-fris (web service) -
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