Olympic Peninsula Regional Anadromous Fish Habitat Intrinsic Potential Modeling

Olympic Peninsula Mapping Portal

2015 REGION WIDE IP MODELING

Previous IP Modeling Work

PHASE II MODELS

IP REVIEW RESULTS / DOCUMENTS

PHASE I MODELS

Partnerships

WILD SALMON CENTER

WCSSP

WADNR

Reports

PDF Document Phase II Report FEBRUARY 2013

PDF Document Phase I Report June 2012


Marine staff
Chart
Field Operations

Composite Coho Rearing IP Model Revisions

Coho IP Modeling has been divided into a composite model with two components: summer and winter rearing. Workshop participants determined that this was necessary because of the bipartite nature of Coho rearing, with two distinct habits in summer and winter.

Mean Annual Flow has been dropped

There was wide agreement that this parameter was not useful in determining habitat quality for Coho. Preference was to derive seasonal flow levels over the stream network to determine low-flow criteria for each reach and establishing a low-flow cutoff value for the fish bearing network.

Coho Salmon life cycle discussion is provided here.

Summer Rearing Model

The Excel table with curves is provided here.

The NetMap text file is provided here.

Parameters

Channel Gradient

See unattributed comment from workshop participant "Juvenile Coho use higher gradient (colder water) upper reaches in summer..."

Floodplain Width / Channel Width (Channel Complexity)

NetMap default curve, from Burnett, K. M., G. H. Reeves, et al. (2007). "Distribution of salmon-habitat potential relative to landscape characteristics and implications for conservation." Ecological Applications 17(1): 66-80. Read the document here.

Channel Width

Preference for small streams, side channels a frequent feature in life cycle accounts. Affinity with Steelhead a common theme. Cutoff of 0.5 meter channel width was frequently mentioned. Porter, 2008 cited in Scheer, 2009 p. 11 implies an improvement in habitat quality at 1.75 m channel width and above.

Winter Rearing Model

The Excel table with curves is provided here.

The NetMap text file is provided here.

Parameters

Channel Gradient

Approximates workshop consensus curve. Similar to Burnett, 2003, Table 1; and Burnett, 2007. Also see unattributed comment from workshop participant "...winter freshets move juveniles into lower (downstream) and lower gradient reaches..."

Floodplain Width / Channel Width (Channel Complexity)

This version of the reverse of the curve is provided in the worksheet. Consensus appeared to be that these values would be appropriate for winter rearing habitat. Modified from Burnett, 2007 (see above for summer rearing version).

Channel Width

See Channel Width for summer rearing above.