Operational Plan for the Restoration of Diadromous Fishes to the ...

Hydrology
Riparian and organic inputs
Nutrients
Light and heat inputs
• Map surface erosion hazards (road
surfaces and soils)
• Inventory areas where boulders have been
removed from streams
• Assess changes in hydrologic regime due to
increased impervious surface areas
• Assess changes in peak flows resulting from
rain-on-snow and extension of drainage
networks by road ditches
• Assess connectivity of wetlands, sloughs, and
stream channels
• Map riparian forest conditions to locate areas
of low woody debris availability
• Assess historical riparian vegetation including
land use and fire history to understand
changes in woody debris and organic matter
inputs
• Assess inorganic nutrient inputs based on
geologic mapping
• Assess current and historical diadromous fish
escapement to examine changes in marinederived
nutrients
• Assess current and historical shading to
estimate changes in stream temperature
• Assess dams and other structures for changes
in stream temperatures.
The general approach is to review data from previously surveyed river reaches and
use GIS technology to identify, map, and assess critical habitat for each species, to
prioritize actions that will protect unimpaired habitat or restore impaired habitats, and
to carry out these actions within 40 years. Habitat restoration and protection
priorities are based on the Strategic Plan and Roni et al. (2002). Higher priority
actions achieve the fastest response, are long-lasting, have a high probability of
success, and impact the greatest number of species.
Goals, Objectives and Strategies
Goal: Restore and maintain a healthy aquatic ecosystem that conserves native
biodiversity, manages or prevents the invasion of non-native aquatic species,
increases the natural recruitment of fish, and improves aquatic habitat.
PRFP Page 85