Draft National Blueways System Pre-Proposal page 6
Some portions had to be shortened to meet page limitations. They will get added back in for the full proposal.
Significance of River and Watershed
Resources
The Minnesota River Basin Trends
document (http://mrbdc.mnsu.edu/mnbasin/trends ) provides a broad overview of the basin with
the goal of providing clues of broader ecosystem health. It shows a mixed
story, some indicators are improving, some declining and some static. What
continues to grow is the awareness people have for the importance of their land
and water use choices and the value of a healthy river system for recreational
opportunities, regional economic resilience and sustainability, and a high
quality location to live, work and play.
·
Important
physiographic or geological features (http://files.dnr.state.mn.us/eco/mcbs/mn_river_report.pdf pgs
2.1 – 2.12 )
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The
Minnesota River flows down the centerline of the broad glacial trough formed by
ice of the Des Moines lobe, which dominates the topography of the southern half
of Minnesota. The trough is almost undetectable from the ground. The valley of
the Minnesota River, on the other hand, is an arresting feature that was
created abruptly after the Des Moines lobe retreated, resulting in the Glacial
River Warren. The valley is still affecting the evolution of the landscape
today.
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One
million years of glacial history is preserved in the banks of the Yellow
Medicine River in Upper Sioux Agency State Park.
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Some of
the oldest rocks (3.6 billion yrs) discovered at the earth’s surface are
located in the valley between Granite Falls and Morton, MN. The Morton Outcrop Scientific
and Natural Area (SNA) protects an example of this crystalline Morton Gneiss.
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Cedar
Mountain SNA, near Franklin, MN is younger bedrock (3.4 - 1.8 billion yrs), forming
the highest point in the valley. The central knob in the area includes
two rock types known only from this site; Cedar Mountain Gabbro and Cedar
Mountain Granodiorite.
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The
eastern end of the valley contains exposed sedimentary rocks formed under shallow
seas 500 to 430 million years ago which contain a rich diversity and abundance
of plant and animal fossils.
·
Significant
ecological values and ecosystem services
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The
Minnesota River valley contains the largest concentration of native plant
communities remaining in southwestern Minnesota. Nearly one quarter of the
100,080 acres occur in the four western counties near the river’s source.
Examples of 52 different plant community classifications occur in the counties
adjacent to the river.
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The rock outcrops of the Minnesota River Valley
are unique resources with a distinctive flora and fauna seen in very few
locations in Minnesota. The Morton Outcrop SNA is one of the highest quality
examples of this plant community remaining in the valley. It is one of few
remaining rock outcrops that retain a substantial prairie flora.
Ø
This
nearly contiguous corridor of diverse native plant communities is an important
terrestrial and aquatic wildlife migration corridor. It provides habitats for
many rare species of mammals (16), birds (27), herptofauna (8), fish (13), and
mussels (18).
·
Unique
natural resources (fish, wildlife, and plant species; natural communities),
designated natural areas, heritage sites, important bird areas, Ramsar, and
other state, national, or international designations.
Ø
The
Blue Sucker (Cycleptus elongates) is
reproducing in the Minnesota River after being absent for decades. Overall
number of fish species is increasing. (Minnesota River Trends – http://mrbdc.mnsu.edu/mnbasin/trends )
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Bald
Eagles, once rare, are commonly nesting along the Minnesota River.
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River otter
surveys indicate a sustained but low population since reintroduction in 1980.
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89 rare
plant species occur in the counties along the Minnesota River, 63 of which are
listed under the Minnesota Endangered Species Act (MN Statute 84.0895). Three
major groups of plants are those found in bedrock outcrops; upland prairies,
savannas; wet prairies and calcareous fens.
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6
Important Bird Areas occur within the watershed.
·
Linkages
to landscape-scale designations or collaboratives
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Minnesota
Prairie Conservation Plan 2010 – core area for prairie restoration.
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Parts
of the Minnesota River Valley Watershed are included in the Prairie Pothole
Joint Venture and the Upper Mississippi & Great Lakes Region Joint Venture.
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Cultural
and historical resources and historic sites
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Numerous
sites related to the U.S.-Dakota War of 1862 (http://www.visitgreatermankato.com/documents/DakotaMap2009RevisedVersion.pdf)
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Numerous
sites related to Native American peoples, European settlement and cultures/historic
events in the watershed. There are numerous sites on the National Historic
Register.
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Recreational
and other social or economic resources
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671 miles
of Minnesota Water Trails on 7 different rivers in the watershed. The Minnesota
River was one of the first designated in 1973. Today there are 46 water
accesses and 23 canoe campsites on the main stem.
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The upper
half of the river’s main stem was designated a Minnesota Wild and Scenic River
in 1977.
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The Minnesota
River Valley National Scenic Byway is 287 miles long, with 16 interpretive
panels along the way. Its website hosts a new geo-cache page around the U.S. –
Dakota War of 1862 and an interactive map with tremendous amounts of trip
planning information and river stories.
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Existing
federal, state, municipal, and private protected areas for conservation purposes
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12
State Parks or State Recreation Areas. Surveys indicate rising attendance since
1987.
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Two
National Wildlife Refuges (25,600 acres) and 417 Waterfowl Production Areas in
4 Wetland Management Districts (84,584 acres)
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613 Wildlife
(132,585 acres) and 212 Aquatic Management Areas (2700 acres)
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26
Scientific and Natural Areas (3041 acres)
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13 TNC
preserves (6843 acres)
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4
Native American Tribal Communities near Granite Falls, Morton and Shakopee, MN
and Sisseton, South Dakota.
Also included will be:
Appendix A – Letters from Sponsoring
Organization and Agencies
and
Appendix B – Letters of Support from Partner
Organizations