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Columbia Basin Fish and Wildlife Program Columbia Basin Fish and Wildlife Program
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Metric 1659: # of natural dam partial passage barriers removed in the freshwater non-tidal zone - Published
Metric Type ID:
1659
Metric Name:
# of natural dam partial passage barriers removed in the freshwater non-tidal zone
Metric Unit Type:
number
Is Numeric:
Yes
Precision:
1.0

Metric Guidance ID Description  Used on Work Elements
296 The number of natural dam partial barriers to fish passage removed at a specified worksite in the freshwater non-tidal zone.
-Natural dam or barrier: Naturally created barriers to fish passage either in the form of log jams or stream aggradation resulting in subsurface flows from landslides or low flows.
-Partial barrier: A barrier to fish migration, preventing passage to specific life history stages. These barriers may be temporal in nature or limit passage due to obstructions, e.g., high flow, low flow, temperature, physical barriers, etc., or other variables that may allow some fish past, but not others.
-Freshwater non-tidal: Habitat with freshwater flowing in a channel or watercourse, including lakes, ponds, and adjacent areas below the high water mark that is not subject to tidal influence.
85

1 Work Element Associated With Metric 1659: # of natural dam partial passage barriers removed in the freshwater non-tidal zone

Work Element Work Element Association Status Description FY Start FY End Guidance ID Guidance Required / Optional Is Activated By Default Included in PI Supports PCSRF/PNSHP (Katz) PNSHP Metric Code PNSHP Metric
85. Remove/Breach Fish Passage Barrier Active Work that facilitates fish passage over a human-made barrier by breaching or removal without replacement. This includes dams, weirs, fish ladders, tidegates, culverts, bridges, and road crossings. If the dam is part of a diversion, use 208. Irrigation Infrastructure Construction or Replacement. If installing a fish passage structure at the same location, use 184. Install Fish Passage Structure, and have removal of the passage barrier as a milestone under that work element. 2011 296 The number of natural dam partial barriers to fish passage removed at a specified worksite in the freshwater non-tidal zone.
-Natural dam or barrier: Naturally created barriers to fish passage either in the form of log jams or stream aggradation resulting in subsurface flows from landslides or low flows.
-Partial barrier: A barrier to fish migration, preventing passage to specific life history stages. These barriers may be temporal in nature or limit passage due to obstructions, e.g., high flow, low flow, temperature, physical barriers, etc., or other variables that may allow some fish past, but not others.
-Freshwater non-tidal: Habitat with freshwater flowing in a channel or watercourse, including lakes, ponds, and adjacent areas below the high water mark that is not subject to tidal influence.
Required Yes Yes No
Rationale: