Tributary and Wetland
Information
DRAFT October 1, 2007
You must complete this form electronically (to utilize the Pick List function). Check the appropriate box(es), explain and select the appropriate entry from the Pick Lists, as applicable; you will need to complete a separate form for each tributary being reviewed. If there are multiple tributaries and/or wetlands for a property, you should also complete the attached Tributary and Wetland Summary sheet.
Tributary[1] Name: (e.g., Stream 1, Mill Creek, Ditch 1, etc)
(1)General Area Conditions:
Average annual rainfall: inches
The tributary only goes through and drains uplands.
The tributary goes through (wholly or partially) and/or is next to wetlands
Wetlands are located in a ditch.
Further explanation, if necessary:
(2) Physical Characteristics:
(a)Relationship with nearest navigable water (NW); see Seattle District Navigable Waterway List[2]
Tributary flows directly into NW.
Tributary flows through tributaries before entering NW.
Project waters are river miles from NW.
Project waters are aerial (straight) miles from NW.
Project waters cross or serve as state boundaries. Explain: .
Identify flow route to NW[3]:.
**Attach a map clearly showing the path (e.g., draw arrows) of the flow from the tributary into the nearest navigable water.
(b)General Tributary Characteristics (check all that apply):
Tributaryis: Natural
Artificial (man-made). Explain:.
Manipulated (man-altered). Explain:.
Tributaryproperties:
With respect to top of bank (estimate):
Average width:feet
Average depth: feet
Average side slopes: .
Length of tributary:
(Note: The “length” is the entire reach of the tributary that is of the same order (e.g., from the point of origin or where two lower order tributaries meet to form the tributary, downstream to the point where the tributary enters a higher order tributary.)
Primary tributary substrate composition (check all that apply):
Silts Sands Concrete
Cobbles Gravel Muck
Bedrock Vegetation. Type/% cover:
Other. Explain:.
Tributarycondition/stability [e.g., highly eroding, sloughing banks]. Explain:.
Presence of run/riffle/pool complexes. Explain:.
Tributary geometry:
Tributary gradient (approximate average slope): %
(c)Flow:
Tributary provides for:
Estimate average months of flow in tributary at project site:
Other information on duration: .
Other information on volume: .
(Note: Describe the average annual flow at the tributary’s downstream end just before confluence with the next tributary/waterbody.)
Tributary has (check all that apply):
Bed and banks
OHWM (check all indicators that apply):
clear, natural line impressed on the bankthe presence of litter and debris
changes in the character of soildestruction of terrestrial vegetation
shelvingthe presence of wrack line
vegetation matted down, bent, or absentsediment sorting
leaf litter disturbed or washed awayscour
sediment deposition multiple observed or predicted flow events
water stainingabrupt change in plant community
other (list):
Discontinuous OHWM.[4] Explain:.
(3) Chemical Characteristics:
Characterize tributary (e.g., water color is clear, discolored, oily film; water quality; etc). .
Identify specific pollutants in tributary or which could enter tributary (e.g., herbicides, pesticides, hydrocarbons, oil, grease, etc), if known:.
(4) Biological Characteristics. Tributary supports: (check all that apply)
Riparian corridor. Characteristics (vegetation type, average width):.
Wetland fringe. Characteristics (vegetation type, average width):.
Wetland/hydrophytic vegetation in the tributary. Characteristics: .
Habitat for:
Federally listed ESA species. Explain findings:.
Fish/spawning areas. Explain findings:.
Other environmentally-sensitive species. Explain findings:.
Aquatic/wildlife diversity. Explain findings:.
Wetland(s):
Attach a map clearly showing the location of the wetlands and tributary (e.g., ditch, creek, river) nearest to the wetlands(s) on the project site andthe flow from the wetlands/tributary into the nearest navigable water.
Attach a delineation of the wetlands. The delineation must meet the protocol in the 1987 Corps of Engineers Wetland Delineation Manual and any applicable Regional Supplements (e.g., Arid West and WesternMountainValley and Coasts).
Document Prepared by: (Name)
(Address and Phone Number)
1
Project Corps Reference Name and Number:Tributary and Wetland Summary
Notes: / ** / = requires SN determination
= requires coordination with EPA/HQ
******Applicant should attach a completedTributary and Wetland Information form for each tributary and wetland.******
Size of wetland in acres / Traditional Navigable Water (TNW) / Relatively Permanent Water (RPW)[5] / Non-RPW[6]** / Wetland Adjacent[7] to a TNW / Wetland Abutting[8] a RPW / Wetland Adjacent to a RPW** / Wetland Adjacent to a non-RPW** / Isolated[9] wetland/water
Stream or Wetland Name / Receiving RPW and flow path to a TNW
Example (shaded):
Wetland A / 0.01 / x / DuwamishRiver (TNW)
Wetland B / 12 / x / Mill Creek
Wetland C / 5 / x / Wetland adjacent to Ditch 1
DuwamishRiver / n/a / x
Mill Creek / n/a / x / Green River which flows into the Duwamish River (TNW)
unnamed tributary (Ditch 1) / n/a / x / Mill Creek which flows into the Green River which flows into the Duwamish River (TNW)
1
[1] A tributary is defined as a natural, man-altered, or man-made water body that carries flow directly or indirectly into a navigable water.
[2] Click on Regulatory - Regulatory/Permits, Click on Wetlands and Waters of the U.S., Click on Navigable Waters
[3]e.g., Ditch 1, which flows through the project area, flows into the Green River, which flows into the DuwamishRiver, a TNW.
[4]Where there is a break in the OHWM that is unrelated to the waterbody’s flow regime (e.g., flow over a rock outcrop or through a culvert), look for indicators of flow above and below the break.
[5]Relatively Permanent Waterbody (RPWs) - a tributary where flow is year-round or continuous (generally 3 months or longer)at least “seasonally”.
[6]Non-Relatively Permanent Waterbody (non-RPWs) - a tributary without year-round or seasonally continuous flows (generally less than 3 months of flow).
[7]Adjacent Wetlands - The term adjacent means bordering, contiguous, or neighboring. Wetlands separated from other waters of the United States by man-made dikes or barriers, natural river berms, beach dunes and the like are “adjacent wetlands.”
[8]AbuttingWetlands - Abutting means in direct contact with
[9]Isolated Wetlands/Waters- are those wetlands/waters lacking a “discrete surface water connection” with other waters of the U.S. and lacking an interstate commerce connection