You can copy from here when filling out the rest of the page.
The U.S. Army Corps of Engineers (Corps), Seattle, Walla Walla, and Portland Districts and the U.S. Environmental Protection Agency, Region 10 (EPA) jointly announce the availability of the Streamflow Duration Assessment Method (SDAM) for the Pacific Northwest (dated November 2015). The method is a rapid assessment tool to help document streamflow duration and distinguish between ephemeral, intermittent, and perennial streams. Developed through statistical analyses of field data, it provides a simplified approach using seven reliable indicators to provide information on streamflow duration.
The U.S. Army Corps of Engineers (Corps), Seattle, Walla
Walla, and Portland Districts and the U.S. Environmental Protection Agency, Region
10 (EPA) jointly announce the availability of the Streamflow Duration
Assessment Method (SDAM) for the Pacific Northwest (dated November 2015). The method is a rapid assessment tool to help
document streamflow duration and distinguish between ephemeral, intermittent,
and perennial streams. The SDAM may help in providing technical guidance for identifying
waters that may be subject to regulatory jurisdiction under Section 404 of the
Clean Water Act; however this method does not affect the definition of “Waters
of the U.S.”
This
announcement extends the applicability of this tool to the Pacific Northwest.
SDAM was developed for use in the state of Oregon by the Corps, EPA, and the
Oregon Department of State Lands in 2011. This current method results from a
validation study conducted in two phases on 264 stream reaches across the range
of hydrologic landscapes of Oregon, Idaho, and Washington from 2008 to 2012. Developed through statistical analyses of
field data, it provides a simplified approach using seven reliable indicators
to provide information on streamflow duration.
The SDAM
can be applied whenever there is uncertainty regarding streamflow duration and
a rapid method of evaluation is desired. The method provides a scientifically
supported, rapid assessment framework to support best professional judgment in
a consistent, robust, repeatable and defensible way. Use of the method may result in more timely
and predictable jurisdictional determinations, and is also useful where
knowledge of streamflow duration improves ecological assessment, management,
and decision-making.
The method and data forms are available on the internet
at:
http://www.epa.gov/measurements/streamflow-duration-assessment-method-pacific-northwest
For
additional information, contact the Corps or the EPA:
Corps:
Portland District, Peter Olmstead, 541-962-0401, Peter.D.Olmstead@usce.army.mil
Seattle District, Jess Jordan, 206-316-3967, Dale.J.Jordan@usace.army.mil
Walla Walla District, Robert Brochu 208-522-1645, Robert.A.Brochu@usace.army.mil
or
Christen Marve Griffith,
208-433-4470, Chisten.M.Griffith@usace.army.mil
EPA: Tracie Nadeau, 503-326-3685, Nadeau.Tracie@epa.gov