Table 3-4. Mean flow requirements at the USGS Peace River at Arcadia gage needed to
 inundate floodplain features, and percent of flow reductions associated with no more
 than a 15% reduction in the number of days that the required flows are equaled or
 exceeded for two benchmark periods (1940 through 1969 and 1970 through 1999).


Floodplain Feature Identified for
Development of Minimum Flows and
Levels for the middle Peace River


Lowest bank elevation to inundate one
side of the river floodplain
Lowest bank elevation to inundate both
sides of river floodplain
90th Percentile elevation of river terrace
vegetation
90th Percentile elevation of wet hardwood
hammock
Mean elevation of river terrace
vegetation
Mean elevation of wet hardwood
hammock
Mean elevation of cypress swamp
Mean elevation of hardwood swamp
Mean elevation of mucky soils


Mean (SD)
Flow
Requirements
(m3/S)


Percent-of-
Flow
Reduction
from 1940
throughl969
 7

 6

 7

 7

 8

 7


Percent-of-Flow
Reduction from
1970 through
1999


115 (78)

158 (57)

123 (47)

197 (72)

112 (66)

160 (61)

82 (25)
83 (34)
66 (31)