Watershed monitoring photo collage

The Aquatic and Riparian Effectiveness Monitoring Plan (AREMP) characterizes the ecological condition of watersheds and aquatic ecosystems to answer the core question:

“Are the Northwest Forest Plan (NWFP) and the BLM Western Oregon Resource Management Plans maintaining and restoring the conditions of aquatic and riparian ecosystems on federal lands in the Forest Plan area?”

AREMP determines the status and trend of inchannel and upslope-riparian watershed condition for sixth-field watersheds (HUC12) within the NWFP area. Upslope and riparian condition are based on mapped data (e.g. road density, vegetation) for all watersheds with ≥5% federal ownership. Inchannel condition is based on stream data (e.g. substrate, wood, pools, temperature, and macroinvertebrates) collected yearly under a sampling program that visits watersheds with 25% or more federal ownership in repeating eight year rotations.

Contact Information

Summer Employment

AREMP hires summer seasonal employees for our field monitoring crews - for details go to this Watershed Monitoring Summer Employment.

Reports

Time Five-Year Monitoring Reports
25-Year Dunham, Jason; Hirsch, Christine; Gordon, Sean; Flitcroft, Rebecca; Chelgren, Nathan; Snyder, Marcia; Hockman-Wert, David; Reeves, Gordon; Andersen, Heidi; Anderson, Scott; Battaglin, William; Black, Tom; Brown, Jason; Claeson, Shannon; Hay, Lauren; Heaston, Emily; Luce, Charles; Nelson, Nathan; Penn, Colin; Raggon, Mark. 2023. Northwest Forest Plan— the first 25 years (1994–2018): watershed condition status and trends. Gen. Tech. Rep. PNW-GTR-1010. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 163 p. https://doi.org/10.2737/PNW-GTR-1010.
20-Year Miller, Stephanie A.; Gordon, Sean N.; Eldred, Peter; Beloin, Ronald M.; Wilcox, Steve; Raggon, Mark; Andersen, Heidi; Muldoon, Ariel. 2017. Northwest Forest Plan—the first 20 years (1994–2013): watershed condition status and trends. Gen. Tech. Rep. PNW-GTR-932. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 74 p.
15-Year Lanigan, Steven H.; Gordon, Sean N.; Eldred, Peter; Isley, Mark; Wilcox, Steve; Moyer, Chris; Andersen, Heidi. 2012. Northwest Forest Plan—the first 15 years (1994–2008): watershed condition status and trend. Gen. Tech. Rep. PNW-GTR-856. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 155 p.
10-Year Gallo, Kirsten; Lanigan, Steven H.; Eldred, Peter; Gordon, Sean N.; Moyer, Chris. 2005. Northwest Forest Plan—the first 10 years (1994–2003): preliminary assessment of the condition of watersheds. Gen. Tech. Rep. PNW-GTR-647. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 133 p.
Monitoring plan Reeves, Gordon H.; Hohler, David B.; Larsen, David P.; Busch, David E.; Kratz, Kim; Reynolds, Keith; Stein, Karl F.; Atzet, Thomas; Hays, Polly; Tehan, Michael. 2004. Effectiveness monitoring for the aquatic and riparian component of the Northwest Forest Plan: conceptual framework and options. Gen. Tech. Rep. PNW-GTR-577. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 71 p.
Other Monitoring Reports
AREMP 2022 Annual Report - Adobe .pdf File - 5.3 MB
AREMP 2022 Aquatic Invasives Species Report - Adobe .pdf File - 1.40 MB
AREMP 2022 Youth Report - Adobe .pdf File - 1.37 MB
AREMP 2023 Field Protocol Manual - Adobe .pdf File - 1.6 MB

For older reports see the Watersheds Archive.


Data

Data Reports

Northwest Forest Plan – The First 25 Years (1994-2018): Watershed Condition Status and Trends

Below are multiple options for downloading the data associated with the 25- year report. All of the data is available as an ESRI geodatabase. Alternatively, the data is available by type and by chapter of the 25-year report. For the download by data type and by chapter outline options, the data is formatted as comma delimited text files, raster images as .TIF, and vector spatial data layers as shapefiles.

Overall

By Data Type

  • AREMP watersheds and sites - Zip File - 32 MB
  • Instream - Zip File - 2.70 MB - Instream survey data includes raw data and estimated trends for macroinvertebrate observed to expected ratio, large wood density, percent transect fines, percent pool tail crest fines, substrate size distributions, relative wetted width, and water temperature.
  • Riparian vegetation - Zip File - 135 MB - Riparian vegetation data includes percent canopy cover, old growth structure index at 80 years, and large tree density (>50 cm dbh) in riparian areas.
  • Roads and sediment (graip-lite/sinmap) - Zip File - 107 MB - Roads and sediment includes a layer of roads on federal lands used in GRAIP-Lite, SINMAP shallow landslide risk layers and summary by HUC, and GRAIP-Lite summary by HUC.
  • Fish Passage (Culverts) - Zip File - 824 kB - Fish passage includes spatial layer of culverts fish passage barrier status, culvert percent barrier status by HUC, and potential unknown road-stream crossings layer.

By Chapter Outline

  • Chapter 01 - Zip File - 32 MB - AREMP watersheds, sites, and associated variables (shapefile)
  • Chapter 02 - Zip File - 336 kB - Climate and Surface Water Availability: Wetted width data and trend estimates (txt)
  • Chapter 03 - Zip File - 91 MB - Forest Canopy Cover and Stream Temperature: Riparian canopy cover (tiff); Riparian canopy cover per HUC (txt); Stream temperature (txt)
  • Chapter 04 - Zip File - 45 MB - Forest Conditions and Instream Large Wood: Riparian OGSI80 (tiff); Riparian OGSI80 per HUC (txt); Density of large trees near streams (tiff); Density of large trees near streams per HUC (txt); Instream wood data and trend estimates (txt)
  • Chapter 05 - Zip File - 107 MB - Roads, Landslide Risk, and Instream Sediment: Road network on federal lands – (shapefile, txt); GRAIP-Lite roads and chronic sediment per HUC – GRAIP-Lite (txt); SINMAP roads and shallow landslide Risk (tiff); SINMAP roads and shallow landslide risk per HUC (txt); Instream Sediment percent fines, Particle size distributions, and Pool-Tail fines data and trend estimates (txt)
  • Chapter 06 - Zip File - 860 kB - Biotic Responses: Road culvert fish passage barriers (shapefile); Culvert percent barrier status by HUC (txt); Unknown road stream crossings (shapefile); Macroinvertebrates observed to expected ratio data and trend estimates (txt)
Northwest Forest Plan-the first 20 years (1994-2008): watershed condition status and trend