Chapter 1 Minimum Flows and Levels - Southwest Florida Water ...

River at Linger Lodge near Bradenton gage sites are indicated. Note that
the scale of the x-axis is not linear..............................................................5-3
Figure 5-3. Summary results for the "upper" Braden River PHABSIM site for May
and June. Descriptive statistics (N, mean, minimum and maximum) for
percent-of-flow reductions associated with a 15% reduction in available
habitat for selected biota are shown, based on review of ten, twenty, thirty
and forty percent reductions in flows measured at the Braden River near
Lorraine gage for two time periods (1988 through 1994 and 1995 through
2005). .........................................................................................................5-5
Figure 5-4. Summary results for the "lower" Braden River PHABSIM site for May
and June. Descriptive statistics (N, mean, minimum and maximum) for
percent-of-flow reductions associated with a 15% reduction in available
habitat for selected biota are shown, based on review of ten, twenty, thirty
and forty percent reductions in flows measured at the Braden River near
Lorraine gage for two time periods (1988 through 1994 and 1995 through
2005). .........................................................................................................5-5
Figure 5-5. Elevation (Feet above NGVD) profile for floodplain vegetation/soils
cross-section (transect) 2. Distances (cumulative length) are shown centered
on the middle of the river channel...............................................................5-7
Figure 5-6. Floodplain wetted perimeter versus elevation at floodplain
vegetation/soils cross-section (Transect) 15. Vertical bars indicate mean
elevations of two floodplain vegetation classes observed at the site. .........5-9
Figure 5-7. Median elevations of vegetation classes at floodplain vegetation/soils
transects along the Braden River..............................................................5-13
Figure 5-8. Percent-of-flow reductions that result in a 15% reduction in the
number of days flow are achieved, based on period of record (1988-2005)
flow records from the USGS Braden River near Lorraine gage. ...............5-17
Figure 5-9. Summary results for the "upper" Braden River PHABSIM site for
October through April. Descriptive statistics (N, mean, minimum and
maximum) for percent-of-flow reductions associated with a 15% reduction in
available habitat for selected biota are shown, based on review of ten,
twenty, thirty and forty percent reductions in flows measured at the Braden
River near Lorraine gage for two time periods (1988 through 1994 and 1995
through 2005). ..........................................................................................5-19
Figure 5-10. Summary results for the "lower" Braden River PHABSIM site for
October through April. Descriptive statistics (N, mean, minimum and
maximum) for percent-of-flow reductions associated with a 15% reduction in
available habitat for selected biota are shown, based on review of ten,
twenty, thirty and forty percent reductions in flows measured at the Braden
River near Lorraine gage for two time periods (1988 through 1994 and 1995
through 2005). ..........................................................................................5-20
Figure 5-11. Percent dominance of instream habitats based on linear extent of
the habitats along fourteen cross-sections in the Braden River................5-21
Figure 5-12. Mean elevations of instream habitats at fourteen cross-section sites
on the Braden River..................................................................................5-22
vi