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Habitat Assessment and Restoration Planning (HARP) Model

January 28, 2021

The Habitat Assessment and Restoration Planning (HARP) model is a process-based analysis for quantifying historical, current, and future habitat conditions, and modeling the potential benefit of alternative restoration actions to salmon populations.

To assist aquatic habitat restoration planning for salmon populations in the Pacific Northwest, we developed the Habitat Assessment and Restoration Planning (HARP) model. The HARP model consists of three separate modules: the spatial analysis, the habitat analysis, and the life-cycle models.

  • The spatial analysis includes the GIS processes and analyses that translate raw data layers into estimates of historical and current habitat areas and quality for each reach in the basin.
  • The habitat analysis then takes those data and additional information to estimate life- stage capacities and productivities for each species in historical, current, and future habitat scenarios.
  • The salmon life cycle models use the habitat scenarios to evaluate which types of habitat change most influence spawner abundance, and to identify which types of habitat restoration are most likely to aid salmon recovery.
Conceptual diagram of model linkages between drivers of habitat change, habitat conditions, life-cycle model input parameters, and salmon population response. Credit: NOAA Fisheries
Conceptual diagram of model linkages between drivers of habitat change, habitat conditions, life-cycle model input parameters, and salmon population response. Credit: NOAA Fisheries

Chehalis River Basin Application

In the Chehalis River basin, we analyzed the effects of changing eight drivers of habitat change: migration barriers, fine sediment, wood abundance, riparian shade, channel straightening, bank armor, beaver ponds, and floodplain habitats, and modeled effects of those changes on spawner abundance of coho salmon, Chinook salmon, and steelhead. Links to journal articles are below, along with the supporting habitat data layers. 

Title Description Download
(.zip)
Last updated Data dictionary

Attributed stream line

Modified NHD+ stream layer with geomorphic and habitat quantity and quality attributes by 200-m segment

Shapefile

January 15, 2021

Data dictionary 

Backwater habitats

Polygon layer of large river (>20 m bankfull width) backwater habitats digitized from aerial imagery

Shapefile

January 15, 2021

Data dictionary

Floodplain habitats

Historical and current floodplain marshes, ponds and lakes

Shapefile

January 15, 2021

Data dictionary

GLO floodplain feature notes

Detailed data and descriptions of floodplain habitats noted along GLO survey lines, corresponding to floodplain habitat polygons

Shapefile

January 15, 2021

Data dictionary

Large river edge habitat

Line layer of large river (>20 m bankfull width) bank and bar edge habitats, including armored bank designations from aerial imagery

Shapefile

January 15, 2021

Data dictionary

Large river riffle habitats

Large river (>20 m bankfull width) riffle polygons digitized from aerial imagery

Shapefile

January 15, 2021

Data dictionary

NOAA subbasins

Subbasins boundaries that define subpopulation habitat ranges

Shapefile

January 15, 2021

Data dictionary

Publications

Beechie, T., C. Nicol, C. Fogel, B. Timpane-Padgham. 2021. A process-based assessment of landscape change and salmon habitat losses in the Chehalis River basin, USA. PLoS ONE 16(11):e0258251.

Jorgensen, J., C. Nicol, C. Fogel, and T. Beechie. 2021. Identifying the potential of anadromous salmonid habitat restoration with life cycle models. PLoS ONE 16(9):e0256792.

Nicol, C., C. Fogel, J. Jorgensen, and T. Beechie. In press. Spatially overlapping salmon species have varied response to early life history mortality from increased peak flows. Canadian Journal of Fisheries and Aquatic Sciences.

Model Code

Model code is available at https://bitbucket.org/noaalcm/asrp/src/v14/.

Last updated by Northwest Fisheries Science Center on 11/03/2021