Freshwater Wetlands - Hydro-Environmental Analysis: Freshwater Environments - page 527

Start point

Tr ibutary analysis

Is the aquatic
resource a
nonwetland waterbody
with no adjacent
wetlands?

No

Combined
nonwetland waters and
adjacent wetlands analysis

Ye s

Is the nonwetland
water a
TNW?

Ye s

No

Is the tributary
an RPW with
perennial flow?

Ye s

Document site conditions
to support flow
determination

No

Document site conditions
to support flow
determination
and significant nexus

Is the tributary
an RPW with
seasonal flow?

Ye s

No

Demonstrated
significant
nexus with
TNW?

Is the
tributary
a non-RPW?

Ye s Ye s

No

See figure 1c:
Isolated waters

No

Waterbody is a
water of the United States

FIGURE 19.11 Example of waterbody determinations (TNW = traditional navigable waterway; RPW =
relatively permanent waters; igure 1c can be found in USACE 2007). (From USACE, Jurisdictional
Determination Form Instructional Guidebook , U.S. Army Corps of Engineers, 2007.)

a “letter to ile” may be required providing justiication for the authorization of the project under
the nationwide permit.
“Letters of permission” is also an abbreviated permit process, where the Corps notiies other
agencies but does not have to publish a public notice. These abbreviated permits are restricted to
projects that have “minor” impacts with little opposition.
For everything else involving dredge or ill operations in jurisdictional waters, individual permits
are required. The permits are issued by the Corps ofice, usually after a preapplication consultation,