CWD CWD Atypical Situations & Problem Wetlands

Question 1

What is an 'atypical situation' in wetland delineation under the 1987 Corps Wetland Delineation Manual?

Accepted Answer

A situation where wetland indicators are absent due to recent human disturbance or natural events

Answer

A site with unusually high biodiversity

Answer

A wetland located in an unusual geographic region

Answer

A site with more than three wetland types present

Question 2

Which of the following is an example of an atypical situation requiring special delineation procedures?

Accepted Answer

A recently farmed wetland where vegetation was removed by cultivation

Answer

A forested wetland with abundant hydrophytic vegetation

Answer

A coastal marsh with obvious tidal influence

Answer

A bog with sphagnum moss and saturated soils

Question 3

What term applies to sites that show no wetland vegetation due to recent disturbance but still exhibit hydric soils and wetland hydrology?

Accepted Answer

Atypical situation wetlands

Answer

Ephemeral wetlands

Answer

Problematic wetlands

Answer

Non-jurisdictional wetlands

Question 4

Under the 1987 Manual, when may a delineator use problematic hydrophytic vegetation indicators?

Accepted Answer

When vegetation alone cannot confirm wetland status due to transitional or stressed conditions

Answer

When vegetation is dominated by upland species

Answer

When the site is already classified as wetland by the state

Answer

When soil data is completely unavailable

Question 5

What field evidence is most useful when vegetation has been removed in a potential atypical situation?

Accepted Answer

Hydric soil indicators and water table measurements

Answer

Canopy cover measurements

Answer

Presence of upland shrubs at the site margins

Answer

Leaf litter depth and decomposition rate

Question 6

Which regional supplement should be used when applying the 1987 Manual in the Atlantic and Gulf Coastal Plain?

Accepted Answer

Atlantic and Gulf Coastal Plain Regional Supplement

Answer

Midwest Regional Supplement

Answer

Western Mountains and Valleys Supplement

Answer

Arid West Regional Supplement