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Biological Opinions - Bureau of Reclamation

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. Site-Specific Restrictions<br />

Restrictions on water diversions from a stream or from hydrologically connected sources (such<br />

as springs or groundwater that would contribute to streamflow) are <strong>of</strong>ten site-specific. Many <strong>of</strong><br />

the water conservation projects require change to diversion timing or rates, however, site-specific<br />

restrictions to those permits may make a project ineligible to the Program or subject to additional<br />

requirements. Diversion permits may have limits on or requirements for:<br />

<br />

<br />

<br />

<br />

<br />

<br />

Season <strong>of</strong> diversion<br />

Rates <strong>of</strong> diversion<br />

Possible time-<strong>of</strong>-day restrictions (avoiding daytime peak in forest evapotranspiration and<br />

water temperature, or coordination with other users)<br />

Fish screen requirements for direct diversions<br />

Requirements for water storage during high flow periods for use in low flow periods<br />

Flow or diversion monitoring and reporting.<br />

c. Protection <strong>of</strong> Instream Flows<br />

The following restrictions are intended to protect instream flows beneficial to fish rearing,<br />

spawning, and movement as well as providing habitat native amphibians and other aquatic<br />

species. Water conservation projects that involve diversions will need additional information to<br />

help determine the benefits to fish and if the proposed design is appropriate for the individual<br />

project site. The following information will be required:<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

Proposed rate <strong>of</strong> diversion<br />

Season <strong>of</strong> diversion<br />

Diversion records (riparian and appropriative) both upstream and downstream <strong>of</strong> the<br />

project site<br />

Estimated water use and storage needs for proposed project<br />

Household/property water conservation plan (low flow shower heads, toilets, etc.)<br />

Estimated stream gradient and substrate<br />

Method <strong>of</strong> accurately measuring diversion rate<br />

2. Engineering Requirements<br />

More complex project types covered by the Program require a higher level <strong>of</strong> oversight<br />

(engineering review, etc.) and review by an engineer. These project types will include:<br />

<br />

<br />

<br />

<br />

Fish passage at stream crossings<br />

Permanent removal <strong>of</strong> flashboard dam abutments and sills.<br />

Small dam removal<br />

Creation and connection <strong>of</strong> <strong>of</strong>f channel habitat features<br />

Specific requirements associated with these more complex project types include the following:<br />

<br />

For road-stream crossings and small dam projects, if the stream at the project location<br />

was not passable to or was not utilized by all life stages <strong>of</strong> all listed salmonids in the<br />

524

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