A quantification of the total area of the realigned Broadway Drain is calculated from the top of slope to the top of slope, as well as the HWL of the Detroit River. These calculations have been provided in square meters and can be found in Table 5.
Table 5: Proposed Habitat in Broadway Drain
TOTAL HABITAT AREA OF REALIGNEDDRAIN EXCLUDING CULVERTS &SHEETPILE WALLS | TOTAL HABITAT AREA OF REALIGNEDDRAIN INCLUDING CULVERTS &SHEETPILE WALLS | TOTAL AREA OF WATER WITIN REALIGNED DRAIN AT HWLOF DETROIT RIVER |
---|---|---|
11,675 sq.m | 12,300 sq.m | 6,350 sq.m |
A quantification of the total habitat lost versus habitat created has been calculated for the top of slop to top of slope and at the HWL. These calculations can be observed in Table 6.
Table 6: Habitat Lost Versus Habitat Created
TOTAL HABITAT AREA OF EXISTING VERSUS REALIGNED DRAIN EXCLUDING CULVERTS & SHEETPILE WALLS | TOTAL HABITAT AREA OF EXISTING VERSUS REALIGNED DRAIN INCLUDING CULVERTS & SHEETPILE WALLS | TOTAL EXISTING VERSUS REALIGNED AREA OF WATER IN THE DRAIN AT HWL |
---|---|---|
Total Habitat Lost = 8,200 sq.m Habitat Created = 11,675 sq.m Habitat Gained = 3,475 sq.m | Total Habitat Lost = 8,200 sq.m Habitat Created = 12,300 sq.m Habitat Gained = 4,100 sq.m | Habitat Lost = 740 sq.m Habitat Created = 6,350 sq.m Habitat Gained = 5,610 sq.m |
Table 7: Habitat Lost in Detroit River as a Result of Jetty Footprint
AREA OF JETTY FOOTPRINT BEYOND HISTORIC HWL | AREA OF JETTY FOOTPRINT ABOVE HWL | AREA OF JETTY SUBMERGED BY HWL |
---|---|---|
530 sq.m | 240 sq.m | 290 sq.m (530 sq.m minus 240 sq.m) |
Table 8: Habitat Lost in Detroit River as a Result of North Bank Rock Slope
TOTAL FOOTPRINT OF ROCK SLOPE | PORTION OF ROCK SLOPE SUBMERGED BELOW HWL |
---|---|
50 sq.m | 26 sq.m |
A quantification of the indirect habitat lost in the Healy Drain and the Drainage Channel along the former Water Street is shown in Table 8. It is important to note that these areas were calculated using conservative estimates through site photos and air photo interpretation.