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Minnesota's Natural vs. Urban Landscapes

  • Overview

    • 300 years ago, Minnesota was characterized by natural landscapes, particularly native prairie.

    • Native prairie landscapes effectively soaked up rain and melting snow, replenishing groundwater supplies.

    • The transformation of Minnesota's landscape due to urbanization significantly affects water management.

  • Contemporary Landscape in Minnesota

    • Modern urban environments feature hard surfaces such as streets, buildings, and parking lots.

    • Rainwater cannot infiltrate the soil due to these impervious surfaces, leading to runoff.

    • This runoff collects pollutants and drains into the nearest low point, often via stormdrains.

Stormwater Infrastructure

  • Management of Stormwater Runoff

    • Cities have established storm sewer systems to prevent flooding from stormwater runoff.

    • Description of storm sewer systems:

    • Comprises vast networks of underground pipes.

    • Directs runoff from streets and yards to nearby waterbodies.

    • Stormwater outfalls are large pipes discharging runoff directly into rivers, lakes, and wetlands.

    • Unlike wastewater from toilets and sinks, stormwater runoff is not filtered or treated, leading to pollution persistence.

  • Stormpipes in Urban Areas

    • In the Twin Cities Metro Area, extensive networks of stormpipes manage stormwater runoff.

    • While they help prevent flooding, they also transport land-based pollutants to waterbodies.

    • A specific map details stormpipe networks under neighborhoods, particularly in Northeast Minneapolis.

    • Ultimately, stormwater from these systems flows into the Mississippi River, introducing pollutants into the basin.

Water Pollution

  • Sources and Types of Pollutants

    • Polluted stormwater runoff is identified as the primary source of water pollution in the United States.

    • Common pollutants include:

    • Sediment

    • Chloride (often from road salt)

    • Phosphorus

    • Nitrogen

    • Bacteria

    • Trash

    • Heavy metals

    • The path of stormwater runoff contributes significantly to the degradation of water quality.

  • Impaired Waters

    • Pollution from stormwater runoff threatens aquatic wildlife and poses risks to human health.

    • A specific map illustrates polluted rivers, lakes, wetlands, and other waterbodies in Minnesota termed "impaired."

    • Impaired waters do not meet acceptable standards for one or more water quality indicators.

Protecting Water Quality

  • Government Involvement

    • Various government agencies at local, state, and federal levels work to protect and enhance water quality.

    • In Minnesota, watershed management organizations (WMOs) and watershed districts oversee monitoring and protection efforts for local water bodies.

  • Importance of Monitoring

    • Monitoring water quality trends is crucial for effective watershed management.

    • Data collected aids in identifying and tracking water quality issues, influencing public policy and projects focused on pollution control.

  • Mississippi Watershed Management Organization (MWMO)

    • The MWMO, a local government entity, monitors water quality within specific areas, including tracking changes in the Mississippi River and associated stormsewer systems.

Improving Water Quality

  • Greener Landscape Initiatives

    • The redesign of landscapes is essential for managing polluted stormwater runoff and ensuring clean water access.

    • Partnerships among watershed organizations and public, private, and nonprofit entities target sustainable urban redevelopment.

  • Green Infrastructure Practices

    • Stormwater Best Management Practices (BMPs) are essential landscape features designed to:

    • Capture polluted stormwater runoff

    • Filter pollutants

    • Allow for stormwater reuse

    • As cities undergo redevelopment, opportunities to integrate stormwater BMPs into urban designs are emphasized.

  • MWMO Projects and Grants

    • The MWMO has many initiatives supporting the installation of stormwater BMPs and green infrastructure.

    • Types of grants offered by MWMO:

    • Stewardship Fund Grants: Support community efforts to manage stormwater and improve water quality and habitat.

    • Capital Project Grants: Aid large-scale stormwater management projects, often in collaboration with local organizations or property owners.

Mississippi River Basin and Its Impacts

  • Location within the Watershed

    • The MWMO watershed is situated at the top of the larger Mississippi River Basin, which extends from Montana to Pennsylvania.

    • This basin covers nearly 40% of the contiguous United States.

    • Actions taken at the local MWMO level can affect water quality and conditions downstream, showcasing a shared responsibility.

  • Connecting with the Watershed

    • The MWMO is part of a network involving various watershed districts and organizations throughout the Twin Cities Metro Area, all focused on improving water quality and habitat.

    • A specific map displays MWMO's boundary along with surrounding watershed organizations.

Community Roles in Water Quality Protection

  • Individual Responsibilities

    • Every resident contributes to watershed health and water quality preservation.

    • Suggested community involvement ways include:

    • Practicing water-friendly yard care.

    • Participating in community clean-up days.

    • Utilizing landscaping techniques to capture and treat polluted runoff.

    • The MWMO encourages residents to visit their website for additional information and ideas on contributing to water quality improvement efforts.