Proposed NOR Assessing linkages between Catchment Hydrodynamics and Wetland Functions and Values


The City of Superior is located in the St Louis River Estuary, a federally listed Area of Concern. The St Louis River, Nemadji, and parts of the Lake Superior Bay are listed on the 303d list of impaired waters. This submittal proposes a wetlands category project conducted in a watershed implementation approach to address potential development stresses on these impacted systems. Seven stationary water level monitoring sites will be established in six wetlands. These sites will be installed by the DNR LTE and FTE staff in cooperation with the city of Superior. Levels will be recorded by continuous recording level recorders for 2 full growing seasons. A part time LTE will conduct weekly inspections of the sites and download collected data. In addition two flow data recorders will be placed on Faxon Creek in an impacted and in a low impacted site to gauge the influence wetlands have on stream flows. Collected data will be analyzed using Excel and Access and statistical software as needed. This data will then be used to calibrate and validate the hydrologic models being used in the Coastal funded Wetland Evaluation Project.


The remaining undeveloped land in the City of Superior consists of approximately 86% wetlands. Given this high percentage, it is difficult for new development or existing facilities to build or expand and avoid wetland impacts. In addition Murphy Oil is poised for expansion with unknown impacts on the existing extensive wetland complexes. An existing Coastal Zone Program funded project will help provide data to determine if the existing wetland loss that has already taken place or future anticipated wetland loss will result in a significant adverse impact to wetlands and their functional values The existing Wetland Evaluation Project includes modeling the flood/stormwater attenuation ability of wetlands within the City of Superior and assessing targeted wetland functional values, specifically, floristic quality, that could be significantly impacted as additional wetlands are lost. The intent of this proposal is to gather critical data necessary for model calibration and validation. The results of the flood/stormwater modeling and floristic quality assessment will allow for more informed decisions by regulatory agencies for future wetland permit applications, as well as data for land use and watershed planning by the City.


Sites will located in the subcatchment of Faxon Creek (WBIC 2843700) in the City of Superior upstream form Catlin Ave to Wisconsin Highway 35. Performance Measures 1) Indentify daily, monthly, and seasonality of wetland hydrodynamics processes 2) Validate the relationship between wetland function and catchment hydrology. 3) Collect water level data, process, and store in a database for analysis 4) Conduct data analyses; produce summary. Data Management 1. Data will be collected from the meters using the instruments proprietary software then processed in Excel and Access. Results will be reported in SWMMS 2. Field data will be collected and transferred to Excel by LTE staff. Data analysis will be conducted by FTE (John Jereczek) in close collaboration with Coastal Program funded modeling team.

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Nearshore wetland area water level monitoring, and Faxon Creek (WBIC-2843700) flow monitoring.