Filters: Tags: {"type":"Label","name":"water quality"} (X) > Types: OGC WMS Layer (X)
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The Great Lakes Restoration initiative (GLRI) template #77 (Beach Recreation Water Quality) in cooperation with 23 local and state agencies expanded the use of predictive modeling at 45 beaches throughout the Great Lakes (fig 1). Local agencies measure fecal-indicator bacteria such as Escherichia coli (E. coli.) along with easily obtained environmental variables used as surrogates to estimate concentrations of fecal-indicator bacteria through a predictive modeling approach. The predictive modeling is being developed by the use of linear regression and/or partial least-squares techniques. The models use software developed by the U.S. Environmental Protection Agency known as “Virtual Beach”. Each beach model is based...
Problem Perchlorate detected in a shallow supply well within the southern portion of the Locust Valley Water District (LVWD) has prompted interest in determining the possible existence of a deeper confined aquifer (North Shore Aquifer) that may be protected from shallow contamination (fig. 1). Previous USGS studies in this area indicate the northern part of Nassau County has a complex hydrogeologic framework (Stumm and others, 2004). A previously mapped buried glacial valley may extend and be present at this location. If such a buried valley exists, all Cretaceous age deposits (Magothy aquifer, Raritan clay, and Lloyd aquifer) may have been eroded and Pleistocene-aged deposits including the North Shore aquifer...
A. BACKGROUND Aquatic macroinvertebrates, such as dragonfly larvae or crayfish have great potential for Mercury (Hg) monitoring, both as indicator organisms (or "sentinels'), and to provide critical information on Hg in lower food webs to assist in interpreting fish Hg levels. Despite these advantages, macroinvertebrates are not widely used in Hg monitoring because of the current need to directly analyze macoinvertebrate tissue for methyl-mercury (MeHg), at much greater expense than analyzing for total Hg (THg) (i.e. as a surrogate for MeHg), as with fish tissue. This is because the ratio of MeHg to THg in macroinvertebrates exhibits large taxonomic, spatial, and temporal variation, and there is no clear...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Cooperative Water Program,
Ecological Assessment of Human and Natural Impacts,
Ecological Assessment of Human and Natural Impacts,
Ecological Assessment of Human and Natural Impacts,
Ecosystem Health,
Summary The Hydrologic Benchmark Network (HBN) consists of 37 watersheds that provide long-term measurements of streamflow and water quality in areas that are minimally affected by human activities. In 2011 measurements of aquatic biology and soil chemistry were added to the network. All of these data are used to study long-term trends in surface water flow, water chemistry, aquatic biology, and soil chemistry and as a benchmark against which to compare changes in flow and chemistry in developed watersheds. In 1962, Luna B. Leopold, then Chief Hydrologist of the U.S. Geological Survey (USGS), proposed the establishment of a network of “hydrologic benchmarks” on the nation’s rivers (Leopold, 1962). The main purpose...
The distribution of mercury (Hg) and sites of greatest Hg methylation are poorly understood in Catskill Mountain watersheds. Although concentrations of Hg in the water column are low, high concentrations of Hg in smallmouth bass and walleye have led to consumption advisories in most large New York City reservoirs in the Catskill Mountains. Mercury in natural waters can exist in many forms, including gaseous elemental mercury (Hg0), dissolved and particulate inorganic forms (Hg(II)), and dissolved and particulate methylmercury (MeHg). Most Hg in living organisms is MeHg, a highly neurotoxic form that bioaccumulates in aquatic food webs. The production of MeHg by methylation of inorganic Hg in the environment...
Monitoring of lake chemistry in the western Adirondack region has indicated reductions in the acidity of these lakes during the past two decades. However, lakes are not always reliable indicators of streams and soils. Uncertainty remains regarding the recovery potential of surface waters and the effects of acidic deposition on soils. Furthermore, nitrogen, long considered a growth-limiting nutrient for northern temperate forests, is likely to be available in excess of that needed by Adirondack forest ecosystems as a result of acidic deposition. In this region, excess nitrogen in the soil leads to acidification of soils and surface waters. Calcium, important for acid neutralization, is also an important nutrient,...
Problem Previous hydrologic studies have indicated that there may be sufficient water resources underlying Richmond, New York, and Bronx Counties for use as a supplemental water supply by the New York City Department of Environmental Protection (NYCDEP) in times of a drought or other water shortage. Unfortunately, comprehensive data on the quantity and quality of the Counties' water resources are not available to make an accurate assessment. In order to evaluate the availability and suitability of these resources, representative and timely data on the ground-water and surface-water resources of these three Counties are needed. Objectives The primary objective is to develop, operate, and maintain long-term monitoring...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Bronx County,
Completed,
Cooperative Water Program,
GW or SW,
GW or SW,
Problem Samples were collected from 10 Key Point sites in the New York City Reservoir system as part of the cooperative USGS-New York State Department of Environmental Conservation (NYSDEC) statewide pesticide monitoring project ( Phillips and others, 2000). Ten pesticides were detected in the key-point samples collected between January 1999 and September 2000 - the herbicides atrazine, metolachlor, simazine and prometon, the herbicide degradates deethylatrazine, hydroxyatrazine, alachlor ethanesulfonic acid (ESA), metolachlor ESA, and metolachlor oxanilic acid (OA), and the insecticide diazinon. Concentrations for most of these detections were generally low (between 0.001 and 0.05 ug/L), with the exception of...
Background: The USGS propose a collaborative investigation with the NYSDEC to evaluate the current condition of benthic macroinvertebrate communities and toxicity of bed sediments in the Eighteenmile Creek Area of Concern (AOC). Sediment-toxicity data provided by the USGS and benthic-community data provided by the NYSDEC from inside the AOC will be compared to similar data from non-AOC sites in Eighteenmile Creek or nearby reference streams (of comparable drainage areas) to determine if the benthos-BUI (Beneficial-Use Impairment) designation is appropriate or if the BUI could be removed in Eighteenmile Creek. The remainder of this pre-proposal addresses only the direct USGS (sediment toxicity assessment) contribution...
Lake Ontario is the easternmost Great Lake and has a direct drainage area of 24,720 square miles (mi2)(excluding the Niagara River and upper Great Lakes watershed), and is bounded by the Canadian Province of Ontario to the north and west and New York State to the south and east. Lake Ontario receives its primary inflow from the watersheds of the upper Great Lakes through the Niagara River near Youngstown, New York, a drainage area of 263,700 mi2. The U.S. Environmental Protection Agency (EPA) is administering a program called the Great Lakes Restoration Initiative (GLRI), which was launched in 2010 to accelerate efforts to protect and restore the health of all the Great Lakes USEPA GLRI Action Plan I & II, (Great...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Climate Impacts,
Climate Impacts,
Climate impacts,
Contaminants, Natural,
Contaminants, Natural,
Problem: The Great Lakes Restoration Initiative (GLRI) was established to accelerate ecosystem restoration in the Great Lakes by confronting the most serious treats to the region, such as nonpoint source pollution, toxic sediments, and invasive species. Much of the effort associated with GLRI is being placed near the most impacted areas in the Great Lakes Basin. Priority Watersheds have been targeted by the Regional Working Group’s Phosphorus Reduction Work Group. These Priority Watersheds (Fox/Green Bay, Saginaw, Genessee, and Maumee) are characterized by having a high density of agricultural land use and have ecosystem impairments that have been clearly identified. The outlet of each of the Priority Watersheds...
Problem - The U.S. Geological Survey (USGS) provided technical assistance between 2001 and 2013 to the U.S. Environmental Protection Agency (EPA) in an investigation of the presence of chlorinated solvents (trichloroethylene and degradates) in ground water in the Middle-to-Lower Devonian and Upper Silurian carbonate bedrock southwest of Auburn in Cayuga County, N.Y. Pieziometric and water-quality data from the wells indicate that contaminants may have migrated in the bedrock as far as 7 miles toward discharge areas that are in an adjacent surface-water basin. The ground-water contamination site was added to the Super Fund priority list in 2003. Objectives - The objective of the work is to characterize the stratigraphy,...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Borehole Geophysics,
Borehole Geophysics,
Borehole Geophysics,
Borehole Geophysics,
Cayuga County,
BackgroundDetailed investigations of mercury cycling and bioaccumulation have been done in the Upper Hudson River basin (upstream of the Hudson River near Newcomb, in New York's Adirondack Mountains, with a focus on the Fishing Brook sub-basin, part of the western headwaters of the Hudson River. This study is part of a National mercury study that includes a concurrent study of McTier Creek, a headwater sub-basin of the Edisto River, located in South Carolina's Coastal Plain. These two study areas provide contrasting and complementary settings for the study of mercury cycling and bioaccumulation in headwater streams with close connectivity to out-of-channel wetlands. Atmospheric deposition is the dominant source...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Adirondack Mountains, Hudson River, South Carolina,
Completed,
Ecological Assessment of Human and Natural Impacts,
Ecological Assessment of Human and Natural Impacts,
Ecological Assessment of Human and Natural Impacts,
BACKGROUND Air emissions from the combustion of fossil fuels in electrical power plants, building heating systems and vehicles are the major source of gaseous sulfur (SOx) and nitrogen (NOx) oxides in the atmosphere. These oxides dissolve in atmospheric moisture forming ions which are deposited by rain, snowfall and dust particles as acidic deposition. Acidic deposition releases soluble aluminum from the soil which can reach toxic concentrations in adjacent water bodies such as streams and wetlands. Acidic deposition also removes important nutrients such as calcium, potassium and magnesium from the soil negatively impacting local flora and fauna. Depletion of calcium combined with excess aluminum makes forest...
The Catskill Mountains of southeastern New York receive among the highest loads of acid deposition in New York and the northeastern U.S. Additionally, the Catskills are underlain by sandstone and conglomerate, which is base poor and weathers slowly. Thus, the Catskills contain numerous streams with low (< 50 µeq/L) acid-neutralizing capacity (ANC) and are sensitive to impacts from atmospheric acid deposition. Since at least 1983, however, the levels of acidity in atmospheric deposition (primarily sulfuric acid) have been declining in the Catskills and throughout New York. While widespread recovery of streams in the Catskills has not yet been confirmed, recent data suggest that recovery in waters with ANC values...
Background and Problem The Retsof salt mine in the Genesee River valley, Livingston County, New York flooded after roof collapses in 1994 created two rubble chimneys in overlying bedrock that intersected a confined aquifer in the basal glacial-drift deposits (figs. 1 and 2). Groundwater flowed downward through the rubble chimneys causing widespread drawdown in the lower confined aquifer until the mine was completely flooded in 1996 (Yager and others, 2001). By 2005, water levels in the lower confined aquifer had nearly recovered to pre-collapse conditions but the hydraulic connection through the rubble chimneys between the brine-filled mine cavity, saline-water bedrock fracture zones, and the lower confined aquifer...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Borehole Geophysics,
Borehole Geophysics,
Borehole Geophysics,
Cooperative Water Program,
Geophysics,
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