A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

21
A Great Lakes Primer
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Transcript of A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Page 1: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

A Great Lakes Primer

Page 2: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Great Lakes Basin

Page 3: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Great Lakes Profile

Page 4: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Lake Depth (m) Surface

Area (km2)

Volume (km3)

Retention

Time (yr)

Population

(millions)

Basin Area Lake Area

Ratio

Superior 147 82,100 12,100 191 0.6 1.56

Michigan 85 57,800 4,920 99 10.1 2.04

Huron 59 59,600 3,540 22 2.7 2.25

Erie 19 25,700 484 2.6 11.7 3.04

Ontario 86 18,960 1,640 6 8.2 3.38

Morphometry and Development

Page 5: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Phosphorus and Eutrophication

Page 6: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Trophic State Index

( , , , )TSI f P Chl PP SD

Page 7: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Trophic State Index

( , , , )TSI f P Chl PP SD

Page 8: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Trophic State Index

( , , , )TSI f P Chl PP SD

Page 9: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Trophic State Index

( , , , )TSI f P Chl PP SD

Page 10: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Trophic State Index

( , , , )TSI f P Chl PP SD

Page 11: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Trophic State Index

( , , , )TSI f P Chl PP SD

Page 12: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Toxic Substances

Page 13: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Invasive Species

183 non-indigenous species in the Great Lakes (NOAA)

Page 14: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Areas of Concern

Areas of Concern (AOCs): severely degraded sites with impaired beneficial use

Remedial Action Plans (RAPs): specify problems and methods of correcting them

Lakewide Management Plans (LaMPs): plan to assess, restore, and protect ecosystem health

GLWQA

Page 15: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

Areas of Concern

Waukegan Harbor (IL)PCBsOutboard Marine Corporation

Rouge River (MI)Urban storm water discharges, CSOs, nonpoint source pollution, and municipal and industrial discharges

Presque Isle Bay (PA)PAHs, heavy metals

Page 16: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

From the Literature – Lake Superior

Toxaphene was a popular replacement for DDT until being banned in 1982. Here, atmospheric sampling and back-trajectory analysis are applied to quantify rates of deposition and sources for Lake Superior.

Page 17: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

From the Literature – Lake Michigan

Beach closing due to fecal contamination are closely associated with public perception of water quality

Page 18: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

From the Literature – Lake Huron

Numbers on x-axis refer to depth zones: 1 = shallow, 2 = intermediate, 3 = deep

Page 19: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

From the Literature – Lake Erie

Black area is region of anoxia. Number at bottom is depletion rate.

Page 20: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

From the Literature – Lake Ontario

Mirex is an organic chemical used as a fire retardant and insecticide (fire ants). It has a long half-life. It was found to be present in fish in northern Lake Ontario, but no source was identified.

Page 21: A Great Lakes Primer. Great Lakes Basin Great Lakes Profile.

A Great Lakes Primer