Fort Erie Creeks Watershed Plan - Niagara Peninsula Conservation ...

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planimetric adjustment. The index produces values that indicate whether the channel is “in regime” or stable (0.41). The RSAT provides a broader view of the system by also considering the ecological functioning of the stream (Galli, 1996). This includes observations of channel stability, scour/deposition, instream habitat, water quality, riparian conditions and biological indicators such as the abundance of benthic invertebrates. Each indicator was ranked numerically, a lower value indicates poorer stream health and a higher value represents a rich, healthy stream. The RSAT score ranks the channel as maintaining a low (35) degree of stream health. Also included in the RSAT are general observations of channel dimensions, such as bankfull widths and depths, substrate size, bank heights, vegetation cover, channel hardening and other disturbances. It should be noted that not all reaches have been walked in entirety due to accessibility and time constraints, and as a result, Table 2.4.1 represents conditions which partially characterize reaches which were observed during field reconnaissance in November and December 2005. Due to the fact that channel processes were inferred in the mapping and aerial photograph analysis, field conditions were confirmed through a detailed field investigation. As such, the following sections summarize results obtained from the detailed geomorphic assessment. Detailed Site Assessment Utilizing the combined RGA and RSAT scores, four reaches were chosen for more extensive characterization. Initially, five detailed sites were chosen (one on each creek) however, due to the marsh/backwater state of Beaver Creek; only one monitoring site was established in Reach BVC-2. The location of the detailed sites was determined based on the objective to provide representative coverage of the watershed, both from a spatial and morphologic perspective. Reach BLC-9 was chosen to provide conditions representative of Black Creek, while Reach SMC-2 was meant to provide representative data for Six Mile Creek (downstream end). Reaches FRC-9 and MLC-3 provided insight into conditions along a particularly sensitive and geomorphologically active section of the Local Management Area of 2.18. Finally, BVC-2 was chosen to represent conditions at the downstream extent of the Beaver Creek where only 1 monitoring site was established. At each of the detailed sites, cross-sections were measured at ten locations, including pools, riffles and transitional areas. At each cross-section, bankfull widths and depths, entrenchment, as well as low flow dimensions were recorded. Substrate was sampled using a modified Wolman pebble count. Sub-pavement was also characterized at each cross-section. Bank assessment included measurements of heights, angle, bank composition, in-situ shear strength, vegetation and rooting depths. These 10 cross-sections were placed over a minimum of two meander wavelengths and included one control cross section located at top of bank. This control cross section involved the installation of permanent pins in order to allow for future monitoring. Erosion pins were also installed at each site to monitor rates of migration within the reach. A March 2008 37 Fort Erie Creeks Watershed Plan General Report (105116)
level survey of the site extending upstream and downstream of the 10 cross-section locations was also conducted. The survey included bankfull elevations, maximum pool depths, top and bottom of riffles and any obstruction to flow and provided measures of energy gradient, inter-pool gradient and riffle gradient. Results of the detailed field investigation are summarized in the site descriptions for each reach which was assessed over the course of field reconnaissance completed in between November and December 2005. 2.4.3 Findings/Constraint Identification Rapid Field Assessment Based on the results obtained from the rapid field assessment, channel stability and health of a variety of reaches contained in the study area were summarized in Table 2.4.1 (ref. Figure WS-2 and Appendix ‘WC-B’ for reach locations). The rapid assessment method of evaluating geomorphic conditions on a watershed-scale through the scoring of individual reaches supports the selection of representative detailed field sites from both a spatial and morphologic standpoint. As such, the Reach Names which were bolded in Table 2.4.1 indicate the reaches where detailed field work was conducted. It should be noted that the site selection for the detailed work was impart attributed to the health and stability of the reach, in addition to the accessibility of the site. TABLE 2.4.1: RAPID FIELD ASSESSMENT SUMMARY FOR FORT ERIE WATRSHED RSAT Creek Reach Name RSAT SCORE RGA SCORE RGA CONDITION CONDITION BLACK CREEK BLC-1 21 MODERATE 0.20 IN REGIME BLC-2 21 MODERATE 0.21 IN REGIME BLC-5 23 MODERATE 0.21 IN REGIME BLC-6 23 MODERATE 0.21 IN REGIME BLC-7 22 MODERATE 0.18 IN REGIME BLC-8 22 MODERATE 0.18 IN REGIME BLC-9 19.5 LOW 0.37 TRANSITIONAL BLC-10 16 LOW 0.19 IN REGIME BEAVER CREEK BVC-2 24.00 MODERATE 0.30 TRANSITIONAL BVC-3 24.50 MODERATE 0.22 TRANSITIONAL SIX MILE CREEK F.E. SMC-1 23 MODERATE 0.25 TRANSITIONAL SMC-2 22.5 MODERATE 0.24 TRANSITIONAL SMC-3 23 MODERATE 0.18 IN REGIME FRENCHMAN’S CREEK FRC-1 20 MODERATE 0.27 TRANSITIONAL FRC-2 22.5 MODERATE 0.29 TRANSITIONAL FRC-3 22.5 MODERATE 0.2 IN REGIME FRC-5 14 LOW 0.21 TRANSITIONAL FRC-8 22 MODERATE 0.30 TRANSITIONAL FRC-9 14 LOW 0.39 TRANSITIONAL FRC-10 26.5 MODERATE 0.32 TRANSITIONAL MILLER CREEK MLC-1 20.5 MODERATE 0.15 IN REGIME MLC-2 23.5 MODERATE 0.11 IN REGIME MLC-3 26 MODERATE 0.34 TRANSITIONAL March 2008 38 Fort Erie Creeks Watershed Plan General Report (105116)
Page 1 and 2: FORT ERIE CREEKS - WATERSHED PLAN M
Page 3 and 4: TABLE OF CONTENTS Section Page No.
Page 5 and 6: TABLE OF CONTENTS Section Page No.
Page 7 and 8: TABLE OF CONTENTS GENERAL REPORT AP
Page 9 and 10: 1.3 Administration This study has b
Page 11 and 12: 2. WATERSHED AREA CHARACTERIZATION
Page 13 and 14: sediment and topographic breaks. In
Page 15 and 16: The make up of the Halton Till and
Page 17 and 18: Any modest level of additional grou
Page 19 and 20: NPCA Groundwater Study did delineat
Page 21 and 22: oundary under the Drainage Act. The
Page 23 and 24: The majority of the urban areas of
Page 25 and 26: groups. A soil map based on the hyd
Page 27 and 28: Baker Creek TABLE 2.2.5: Con’t SU
Page 29 and 30: Creek and Baker Creek have higher u
Page 31 and 32: Location Node TABLE 2.2.8: FREQUENC
Page 33 and 34: RiverCAD TM has been used to develo
Page 35 and 36: Culvert ID Watersheds TABLE 2.3.1:
Page 37 and 38: Culvert ID Watersheds TABLE 2.3.1:
Page 39 and 40: agricultural purposes prior to 1955
Page 41 and 42: fields. Due to the scale and qualit
Page 43: were constructed between 1978 and 2
Page 47 and 48: Field Investigations 2.5.2 Work Act
Page 49 and 50: Marginal Habitat: those fisheries h
Page 51 and 52: natural channel, except for a 1.3 k
Page 53 and 54: The fish community in the lower por
Page 55 and 56: TABLE 2.5.2: RECENT MINISTRY OF NAT
Page 57 and 58: Characterization of the natural her
Page 59 and 60: TABLE 2.6.1: TERRESTRIAL NATURAL HE
Page 61 and 62: The soil units included in each lan
Page 63 and 64: • Percent of interior forest: >10
Page 65 and 66: Subwatershed TABLE 2.6.4: COVER TYP
Page 67 and 68: The main percentage shift from “o
Page 69 and 70: and 1976. These changes removed a f
Page 71 and 72: The regulated species are listed in
Page 73 and 74: TABLE 2.6.9: PROVINCIALLY & NATIONA
Page 75 and 76: illed Gull (spring migration only),
Page 77 and 78: ated Locally Significant, a high pr
Page 79 and 80: subwatersheds, many of the forest p
Page 81 and 82: proportions; many of the mesic site
Page 83 and 84: TABLE 2.7.4: NPCA BENTHIC INVERTEBR
Page 85 and 86: Site ID Date Alkalinity Aluminum Am
Page 93 and 94: A review of the NPCA water quality
Page 95 and 96:
TABLE 2.7.1 SUMMARY OF ANNUAL CONTA
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The Lake Erie Shoreline Management
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ackshore. In most area, the structu
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3. SUMMARY OF POLICIES, OBJECTIVES
Page 103 and 104:
TABLE 3.1.1: SUMMARY OF ACTS AND GU
Page 105 and 106:
Level of Government Regional Level
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The Clean Water Protection Act 2006
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3.1.3 Stream Morphology It is NPCA
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Type 3: areas with low productive c
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The principles advanced in the docu
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TABLE 3.1.3: SUMMARY OF POLICIES, S
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e) To ensure the preservation of La
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• Prevent installation of barrier
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Targets: • Priority to long-term
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The purpose of the hydrologic model
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Watershed / Subcatchment TABLE 4.1.
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TABLE 4.1.4: 100 YEAR PEAK FLOW COM
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Watershed Damage Location NPCA Floo
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not necessarily reflect absolute ch
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potentially increase the erosion in
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TABLE 4.22: SUMMARY OF ANNUAL CONTA
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Several Special Policy Areas includ
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TABLE 4.3.2: TERRESTRIAL NATURAL HE
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TABLE 4.3.2: TERRESTRIAL NATURAL HE
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Subwatershed TABLE 4.3.4: MODERATE
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Similar to other Fort Erie Creeks,
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the channel as part of the Niagara
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In order to summarize the findings
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lakes, seepage areas, recharge/disc
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Regional Municipality of Niagara ca
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• Maintain existing shading veget
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d) Restoration of the slough mosaic
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‣ Enhancement for subwatersheds w
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and value of the stream system. The
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If there is no registered floodplai
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TABLE 5.3.1: INTEGRATED WATERCOURSE
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communities in natural channels wit
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TABLE 5.3.5: INTEGRATED RATING OF T
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TABLE 5.3.7: INTEGRATED RATING OF T
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% wetland % original wetland** TABL
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TABLE 5.3.11: INTEGRATED RATING OF
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TABLE 5.3.13: INTEGRATED RATING OF
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5.4 Local Subwatershed Opportunitie
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ase conditions have almost eliminat
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c) Confirm and/or refine wetland bo
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• Kraft Drain north of Dominion R
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REACH NAME TABLE 5.4.3: PLANNING LE
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TABLE 5.4.6: SUMMARY OF LOCAL OPPOR
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TABLE 5.4.10: SUMMARY OF LOCAL OPPO
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TABLE 5.4.14: SUMMARY OF LOCAL OPPO
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Watercourses (erosion, fisheries) T
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In addition to the priority assigne
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TABLE 6.1.2: SUMMARY OF PRIORITIZED
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TABLE 6.1.6: SUMMARY OF PRIORITIZED
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TABLE 6.1.10: SUMMARY OF PRIORITIZE
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Cost Summary Each of the subwatersh
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In terms of water quality, the NPCA
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REFERENCES American Forests, 1999.
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Kingston, M.S. and E.W. Presant. 19
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GLOSSARY OF TERMS Alluvial Soil Sed
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Enhancement Strategies and actions
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Hydraulics Science pertaining to fl
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Off-line Stormwater infrastructure
Page 221 and 222:
Settlement Area In the Fort Erie Cr
Page 223 and 224:
ECA EIS EMC END EPA FEC FRC HEC-RAS
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