Download Stream Geomorphic Assessment

Table of Contents
Step
Description
Page
Introduction
1-6
Where to Complete Phase 1 Assessments
Final Products of the Phase 1 Rapid Stream Assessment
Basic Methods and Skills
Materials Needed
Getting Started
Phase 2 Quality Assurance Program
Starting the Assessment
7 - 14
Defining Stream Reaches
Delineating the primary watershed
Selecting assessment streams
Defining geomorphic reaches – a visual “first cut”
Reach Numbering
Watershed Orientation – verifying reach breaks in the field
Step 1
15
Reach Locations
1.1
1.2
1.3
Step 2
Reach Description
Town
Latitude and Longitude
Determining Stream Types
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
Step 3
Downstream and Upstream Elevations
Valley Length
Valley Slope
Channel Length
Channel Slope
Sinuosity
Watershed Size
Channel Width
Valley Width
Confinement
Stream Type
Basin Characteristics: Geology and Soils
3.1
3.2
3.3
3.4
3.5
Alluvial Fan
Grade Controls
Geologic Materials
Valley Side Slopes
Soil Properties
4.1
4.2
4.3
4.4
Watershed Land Cover / Land Use
Corridor Land Cover / Land Use
Riparian Buffer Width
Groundwater and Small Tributary Inputs
5.1
5.2
5.3
5.4
5.5
Flow Regulations and Water Withdrawals
Bridges and Culverts
Bank Armoring or Revetments
Channel Modifications
Dredging and Gravel Mining History
Step 4
Land Cover and Reach Hydrology
Step 5
Instream Channel Modifications
Phase 1 Stream Geomorphic Assessment
28 - 37
38 - 44
45 - 52
VT Agency of Natural Resources
-i-
April, 2004
16 - 27