CGRG Bibliography of Canadian Geomorphology
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Author : Benner, M.
Date : 1999.
Title : Twenty Mile Creek management plan.
Publication : Proceedings of the Second International Conference on Natural Channel Systems March 1- 4, 1999 Niagara Falls, Canada.
Issue :
Page(s) : 520-533.
Abstract
Outletting to Lake Ontario at Jordan in the Town of Lincoln, Twenty Mile Creek is the second largest independent watershed within the jurisdictional boundary of the Niagara Peninsula Conservation Authority. Traversing two Regional Municipalities and four Local Municipalities, the upper reaches of the watershed are characterized by rolling topography. The middle and lower reaches of the watershed are characterized by gently rolling to flat topography before spilling over the Niagara Escarpment at Balls Falls. Twenty Mile Creek outlets into the Jordan Harbour Marsh at Lake Ontario. This 125 hectare coastal wetland has been identified as a class 1 Provincially Significant Wetland and an Area of Natural and Scientific Interest (ANSI) by the Ministry of Natural Resources. As one of the few remaining coastal wetlands on Lake Ontario, this wetland has also been listed as a priority area for remediation under the Great Lakes Wetland Conservation Action Plan. Sediment problems relating to agricultural practices, roads planning and creek maintenance practices plague much of the Twenty Mile Creek watershed, and have degraded the overall water quality of the Jordan Marsh and upstream systems. Degraded channel flows caused, in part, by sedimentation, water taking, and historical degradation of headwater sources have also resulted in intermittent periods of little or no flow in this marsh and the lower reaches of the watershed. In 1994, the Niagara Peninsula Conservation Authority completed its Watershed Conservation Strategy which detailed program themes and an implementation framework for the various Authority program areas. From this implementation framework and associated action strategies, Twenty Mile Creek was identified as a priority watershed for the completion of a watershed management plan. In 1995, the degraded condition of the Twenty and the Jordan Harbour Marsh came to the attention of the local communities and resource agencies. A Waterways Working Group comprised of Provincial Agencies, the Conservation Authority, the Ontario Soil and Crop Improvement Association, Local Municipalities, and area farmers was formed to develop volunteer community approaches to improving water quality in the Twenty Mile Creek. A significant recommendation of the Waterways Working Group was that the NPCA work to develop an overall watershed planning approach to solving the water quality and quantity problems prevalent in the Twenty Mile Creek watershed and Jordan Harbour Marsh. In that same year, the Conservation Authority, with the support of our watershed partners began a phased management approach to solving the water quality and quantity problems within the whole of Twenty Mile Creek. These phases are briefly described.
Bibliography of Canadian Geomorphology