Vanishing Actâ¦.. - Green Lake County

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Macro-Scale Analysis: Use photo analysis to compare mid-summer emergent & floating leaf growth 1989-2009 Federal Agricultural Program Photography (mid-summer flights)
•Scanned and GeoReferenced 7000 Aerial Images •Created a Composite Image for Each Year •Used Mapping Software to define each visible plant bed •Software measures exact acreage of the plant beds Approx. 651 acres 1989 Photographic Analysis of visible emergent and/or floating leaf aquatic plant beds
Page 1: Lake Puckaway’s Vanishing Act….
Page 4 and 5: “It is easy to lose one's way, es
Page 6 and 7: “Wau-bun” (1855) This lake has
Page 8 and 9: “The boys were fed up with puddle
Page 10 and 11: Goal of the Lock & Dam (1846): Link
Page 12 and 13: The Princeton Dam was built by the
Page 14 and 15: 1941 Wild rice emerged along the en
Page 16 and 17: Historical Management • 1946 - Pu
Page 18 and 19: “Should the openings continue to
Page 20 and 21: 1977 o Almost no submergent plants
Page 22 and 23: Historical Management • 1983-1984
Page 24 and 25: GOAL: Maintain and Improve Water Qu
Page 26 and 27: 1. Why do we care about reduction i
Page 29: A lake without plants is like a for
Page 32 and 33: 2. How do we measure it?
Page 34 and 35: 1946
Page 36 and 37: September 23rd 1950
Page 38: Algae Bloom September 7 th 1971
Page 41 and 42: 2005 Increased Vegetation Growth No
Page 43 and 44: 1989 2005 1999 2006
Page 45 and 46: 1989 1999 2005 2006
Page 51: How do we Quantify the rate and amo
Page 55 and 56: 1989 651 Acres 1999 483 Acres >25%
Page 57 and 58: Almost 2000 acres of loss over 60 y
Page 60 and 61: 3. What causing the reduction?
Page 62 and 63: Carp Algae Blooms High Water Plant
Page 64 and 65: Shift in Fish Population??? Minnow/
Page 66 and 67: •Algae prevents light front reach
Page 68 and 69: Resiliency: a:capable of withstandi
Page 70 and 71: Established Plant Bed Established L
Page 72 and 73: Establishing new plant beds require
Page 74 and 75: Moving Forward by Looking Back… E
Page 77 and 78: 4 Variables of Water Level Fluctuat
Page 79: Management Activities • Historica
Page 84: Questions?

Vanishing Actâ¦.. - Green Lake County

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Vanishing Actâ¦.. - Green Lake County