MFW

 

 

 

 

 

Middle Fork Willamette Watershed

GIS Analysis and Mapping Pages

 

 

May, 2002

Base Maps:

 

 

The Middle Fork Willamette watershed occupies 1,353 square miles,
or 29% of Lane County, Oregon.
It is the second largest watershed in the Willamette Basin.

 

 

The headwater streams for MFW watershed drain the snowfields and glaciers
of the Cascades. Waldo Lake, at 5,414' elevation, in the eastern portion
of the watershed, is one of the purest lakes in the world.
The tallest peak in the watershed is Diamond Peak, 8744'.

 

 

Thirteen Fifth-Field Watersheds are within MFW watershed:

 

 

This Watershed Assessment Work is concentrating on the lower three fifth-field watersheds:
Little Fall Creek, 58 sq. miles
Lost Creek, 54 sq. miles
Lower Middle Fork Willamette, 56 sq. miles

The best maps for exploring the region are USGS topo maps.
Paper maps are available at many bookstores and recreational outlets.
Digital maps, also known as DRG's, can be downloaded from The Regional Ecosystem Office

Significant mountains in the Lower MFW watershed include:
Little Cowhorn Mountain, elevation 4236', at the eastern edge of Little Fall Creek drainage.
Mt June, elevation 4618',at the southern tip of the Lost Creek drainage.
Mt Pisgah, elevation 1528', on the western edge of the Lower MFW drainage.

The elevation at the confluence of the Middle Fork and the Coast Fork, which creates the mainstem Willamette River, is 580'.

Mt. Pisgah, at 1528', is taller than 50% of the landmass in the watershed.

25% of the watershed ranges in elevation from 580' to 912', shown here in dark green.
25% of the watershed is 912' - 1502', light green.
25% of the watershed is 1502' - 2185', yellow.
20% of the watershed is 2185' - 3061', orange.
5% of the watershed is 3061' - 4618', red.

Snow zone map.

In Oregon, it generally snows above 4200' and rains below 1500'. In the transition zone between these two, havoc is created when a cold front drops a bunch of snow which is followed by the Pineapple Express which pours rain on top of the snow causing it to melt quickly. Nearly 50% of the Lower MFW is in this transition zone, depicted here as icy blue:

We are currently modeling the potential for delivery of large wood to Lost Creek watershed. Here's the preliminary small map.

Continue on to the Final Assessment report maps


For more information, send a note to jpreed@epud.net

Copyright (c) 2002

Jim Reed, Ph.D.
The HydroLogic Group
Mapping, GIS Analysis and Web page development
All rights reserved.

November 2002.

This page is http://www.epud.net/~jpreed/mfw.htm