Books > Social sciences > Politics & government
|
Buy Now
Estimated Quantity of Water in Fractured Bedrock Units on Mt. Desert Island, and Estimated Ground-Water Use, Recharge, and Dilution of Nitrogen in Septic Waste in the Bar Harbor Area, Maine - Open-File Report 2002-435 (Paperback)
Loot Price: R442
Discovery Miles 4 420
|
|
Estimated Quantity of Water in Fractured Bedrock Units on Mt. Desert Island, and Estimated Ground-Water Use, Recharge, and Dilution of Nitrogen in Septic Waste in the Bar Harbor Area, Maine - Open-File Report 2002-435 (Paperback)
(sign in to rate)
Loot Price R442
Discovery Miles 4 420
Expected to ship within 10 - 15 working days
|
In 2002, the U.S. Geological Survey, in cooperation with the town
of Bar Harbor, Maine, and the National Park Service, conducted a
study to assess the quantity of water in the bedrock units
underlying Mt. Desert Island, and to estimate water use, recharge,
and dilution of nutrients from domestic septic systems overlying
the bedrock units in several watersheds in rural Bar Harbor. Water
quantity was calculated as the static volume of water in the top
600 feet of saturated thickness of the bedrock units. Volumes of
water were estimated on the basis of effective fracture porosities
for the five different rock types found on Mt. Desert Island.
Values of porosities for the various bedrock units from the
literature range more than five orders of magnitude, although the
possible range in porosities for most individual rock types is on
the order of three orders of magnitude. The static volume of water
in the various units may range from a low of 4,000 gallons per acre
for intrusive igneous rocks (primarily granites) to 20 million
gallons per acre for the Cranberry Island Volcanics, but given the
range in porosity estimates, these numbers can vary by orders of
magnitude. Water-use data for the municipal water supply in the
Town of Bar Harbor (1998-2000) indicate that residential usage
averages 225 gallons per household per day. Recharge to the bedrock
units in rural Bar Harbor was bracketed using low, medium, and high
estimates, which were 3, 9, and 14 inches per year, respectively.
Water use in 2001 was about 2.5 percent of the total estimated
medium recharge (9 inches per year) in the study area. Dilution of
nitrogen in septic effluent discharging to the bedrock aquifer was
evaluated for the development density in 2001. On the basis of an
assumed concentration of 47 mg/L of nitrogen in septic system
discharge, dilution factors in populated rural Bar Harbor
watersheds ranged from 4 to 151, for the housing density in 2001.
Understanding that ground water in this fractured b
General
Imprint: |
Bibliogov
|
Country of origin: |
United States |
Release date: |
February 2013 |
First published: |
February 2013 |
Authors: |
Martha G. Nielson
|
Dimensions: |
246 x 189 x 3mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
56 |
ISBN-13: |
978-1-288-77396-1 |
Categories: |
Books >
Social sciences >
Politics & government >
General
|
LSN: |
1-288-77396-X |
Barcode: |
9781288773961 |
Is the information for this product incomplete, wrong or inappropriate?
Let us know about it.
Does this product have an incorrect or missing image?
Send us a new image.
Is this product missing categories?
Add more categories.
Review This Product
No reviews yet - be the first to create one!
|
|
Email address subscribed successfully.
A activation email has been sent to you.
Please click the link in that email to activate your subscription.