News Headlines
From news.glin.net:

Detroit River: The good, the bad, the ugly
The Toledo Blade (11/17)
The Detroit River's rich history spawns environmental troubles, but hope surfaces.

Council of Great Lakes Industries, Consumers Energy and other member partners seek water management tools to ensure Great Lakes sustainability
MLive (11/14)
With funding from the Great Lakes Protection Fund, the Council of Great Lakes Industries and several of its member partners are evaluating sustainable water management tools.

Michigan communities grapple with upgrading water pipes
Great Lakes Echo (11/6)
The American Society of Civil Engineers estimates that Michigan will need to invest around $15-billion in its drinking and waste water systems over the next 20 years.

Surrounded by water, Ohio River Valley experiences economic resurgence
Circle of Blue (11/5)
Communities in the Ohio River Valley are leveraging their water resources, including the Ohio River, the busiest inland waterway in the U.S., to drive economic prosperity.

St. Lawrence River Board of Control says water to stay at prescribed levels
North Country Now (11/4)
The International St. Lawrence River Board of Control says after a review of water levels in the Lake Ontario-St. Lawrence River system, they will keep them as prescribed in Plan 1958-D.

Ballville Dam decision coming soon
The News-Herald (11/4)
As city council in Fremont, Ohio, nears a decision on whether to remove the Ballville Dam on the Sandusky River, wetland loss and sediment behind the structure are possible issues.

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Great Lakes Commission

General Definitions & Abbreviations

bgd: billion gallons per day

bld: billion liters per day

consumptive use: that portion of water withdrawn or withheld from the Great Lakes basin and assumed to be lost or otherwise not returned to the Great Lakes basin due to evapotranspiration, incorporation into products, or other processes (Agreement Article 103; Compact Section 1.2).

Great Lakes surface water (GLSW): the Great Lakes, their connecting channels (the St. Clair River, the Detroit River, the Niagara River and the St. Marys River), and the St. Lawrence River

groundwater (GW): all subsurface water

diversion: a transfer of Water from the basin into another watershed, or from the watershed of one of the Great Lakes into that of another by any means of transfer, including but not limited to a pipeline, canal, tunnel, aqueduct, channel, modification of the direction of a watercourse, a tanker ship, tanker truck or rail tanker but does not apply to water that is used in the basin or Great Lakes watershed to manufacture or produce a product that is then transferred out of the basin or watershed (Agreement Article 103; Compact Section 1.2)

intrabasin transfer: a transfer of water from the watershed of one of the Great Lakes into the watershed of another Great Lake (Agreement Article 103; Compact Section 1.2)

level of accuracy: the quality of data based on percentage of total volume and rated as 1) measured; 2) partially measured or 3) estimated,

level of aggregation: the quality of data based on percentage of total volume and rated as 1) originating from site-specific sources or 2) originating from higher level aggregate sources, such as county or census databases

mgd: million gallons per day

mld: million liters per day

other surface water (OSW): tributary streams, lakes, ponds, and reservoirs within the Great Lakes basin

threshold facility: a facility withdrawing in excess of the Great Lakes-St. Lawrence Compact/Agreement uniform trigger level of 100,000 U.S. gallons/day (380,000 liters/day) averaged over a 30-day period. A threshold facility is determined by the total withdrawal (or consumption) of all sources combined (Great Lakes-St. Lawrence surface water, other surface water, and groundwater) rather than a single source.

tgd: trillion gallons per day

tld: trillion liters per day

withdrawal amount: the taking of Water from surface Water or groundwater (Agreement Article 103, Compact Section 1.2).