3 edition of Estimates of nitrate loading to South Puget Sound by groundwater discharge found in the catalog.
Estimates of nitrate loading to South Puget Sound by groundwater discharge
Charles F. Pitz
by Washington State Dept. of Ecology, Environmental Assessment Program in [Olympia, Wash.]
Written in English
|Other titles||Estimates of nitrate loading|
|Statement||by Charles F. Pitz.|
|Series||Ecology report -- #99-348, Publication (Washington (State). Dept. of Ecology) -- no. 99-348.|
|Contributions||Environmental Assessment Program (Wash.)|
|The Physical Object|
|Pagination||17 p. :|
|Number of Pages||17|
2. Nutrient Loading Study: We will characterize and quantify the various inputs of nutrients to Penn Cove from stormwater runoff, submarine groundwater discharge (SGD), the two sewage treatment plants, the Skagit River, Puget Sound, and bottom sediments. Island County Public. Georgia Basin and Puget Sound. It compared river and anthropogenic nitrate nitrogen loadings to loadings from estuarine circulation, with estuarine flow calculated in a salinity balance equation. DIN loading rates for rivers came from a USGS nutrient loading review for Puget Sound .
ABSTRACT On the basis of time series of discharge and nitrate concentration, the relation between nitrate load and discharge in Danish rivers is discussed. Recent changes in the nitrate load are related to probable causes, such as extreme climatic situations, increased fertilizer use, structural changes in Danish agriculture and drainage effects. levels in the groundwater will be double the EC limit. Nitrate in the groundwater of several agricultural areas in 3- southern Ontario, Canada, also exceeds 10 mg/L NO N (Gillham, ). Nitrate contamination of groundwater is also a grow-ing problem in the Caribbean, Africa, the Middle East, Australia, and New Zealand.
by Katherine Ransom and Thomas Harter In California’s Central Valley, many communities depend significantly or entirely on groundwater as their drinking water supply. Studies estimate the number of private wells in the Central Valley to be on the order of , to , (Viers et al., ; Johnson and Belitz, ). Elevated nitrate concentrations in. Estimated state areas and percent of state areas with groundwater nitrate concentrations > 5 mg/L, which is half of EPA's maximum contaminant level for nitrate. Also shown is the estimated % of the population in each state with self-supplied drinking water (98% of which is from groundwater wells).
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Estimates of discharge volume and nitrate concentration were then integrated to determine annual loading to the South Sound. The loading calculations predict an annual mass of nitrate discharging to South Puget Sound via groundwater transport between approximatelykgnitrate/yr. Estimates of Ground-Water Contaminant Loading to the Colville River in the Vicinity A Report on Nitrate Contamination of Ground Water in the mid-Columbia Basin Estimates of Nitrate-N Loading to South Puget Sound by Groundwater Discharge.
BBR - Estimating Ground-Water Discharge and Nitrogen Loading in Hood Canal, WA - Completed FY Introduction and Problem - In Septemberit was observed that fish on the west side of Hood Canal near Hoodsport were under stress from low concentrations of dissolved observation prompted the Washington State Department of Fish and Wildlife to temporarily close parts.
Unfortunately, ground-water nitrate load and total nitrogen load data were available for far fewer stations (48) than those used to compute ground-water discharge, and therefore the data set could not be used to conduct statistical tests between ground-water nitrate yields and all of the HGMRs.
The fractions of nitrate loading to streams apportioned among the three end‐member pathways followed similar patterns to those observed for streamflow (Table 3), with the majority of nitrate load and discharge from slowflow groundwater at the Tomorrow River and from concentrated quick flow at Duck Creek.
However, the magnitudes of flow and Cited by: Fig. 2 depicts a pictorial representation of the proposed framework for modeling the impact of land use on nitrate contamination of groundwater (Almasri, ).The framework is a simplification to the itemized conception presented earlier in the introduction of this manuscript.
The framework incorporates the identification of the spatial distribution of the on-ground nitrogen sources. Note - These data reflect the excess amounts ('loads') of TN and TP generated beyond the assimilative capacity of each states' watersheds.
Net incremental TN or TP load is the sum of the area-weighted ++ incremental TN or TP loads from all catchments (drainage basins) within a state that are covered by one or more regional SPARROW models.
Also shown is the average yields for each state, which. Nitrogen loading from wastewater treatment plants generally increases as the population increases, and the population of Puget Sound is expected to double by However, implementation of nitrogen-removal treatment technologies (currently not required) has the potential to offset future increases in nitrogen loading due to population growth.
Estimation of Nitrate Load •M out (M/T): nitrate load to rivers •M in (M/T): nitrate from septic tanks to surficial aquifer •M dn (M/T): nitrate loss due to denitrification M dn = R dnV g R dn (M/T/L3): denitrification rate V g (L3): volume of groundwater solution, estimated from groundwater flow and reactive transport modeling M in = M.
planning tool to estimate the lot size needed to provide sufficient recharge to maintain nitrate concentrations below a desired water quality goal.
The model adapts similar methods presented by others with multiple elements of the nitrate -groundwater system in a unique manner that incorporat es common input variables, Pennsylvania specific. Predicting Ground-Water Vulnerability to Nitrate in the Puget Sound Basin by M.L. Erwin and A.J. Tesoriero* What is ground-water vulnerability.
It is an estimate of the relative risk of ground- water contamination by a particular constituent, such as nitrate. Where is the ground water most vulnerable. In the Puget Sound Basin, shallow wells in.
We estimated direct groundwater discharge to the Great Lakes using a water-budget approach that has been previously used to quantify fresh submarine groundwater discharge to oceans (Zektser and Loaiciga,Destouni et al.,Sawyer et al., ) and is capable of resolving high-resolution continental-scale discharge y, we identified coastal areas of land that fall outside.
model to estimate the timing of nitrate delivery to the bay over the next several decades. The simulated mean and median residence times of ground-water in the lowermost peninsula are 30 and 15 years, respectively.
Current and future nitrate concentrations in coastal groundwater discharge were. taken by the Washington State Department of Ecology in estimating nitrate loading to South Puget Sound in ground-water discharges (Pitz, ), nitrogen compounds contained in ground water discharged to streams will be included as part of the stream.
Review Draft: Assimilative Capacity Study for Nutrient Loading in the Lower White River: December Estimates of Nitrate-N Loading to South Puget Sound by Groundwater Discharge: November Addendum to Final Report: Screening Survey for Metals and Dioxins in Fertilizer Products and Soils in Washington State.
Estimates of Nitrate-N Loading to South Puget Sound by Groundwater Discharge: November Simpson Northwest Timberlands Temperature Total Maximum Daily Load Submittal: October Groundwater Data Compilation for the Okanogan Watershed: October Briefing Paper for the Okanogan Watershed, WR 49, Nitrate in Groundwater Nitrate is a stable and highly soluble ion with a low potential for precipitation or adsorption.
It moves through soil over long distances with ease, following the course of groundwater movement. Nitrate is a naturally occurring inorganic chemical. Background nitrate (NO 3-N). A new approach for separating the streamflow hydrograph into three components was developed and coupled with high-frequency nitrate data to estimate time-variable nitrate loads from chemically dilute quick flow, chemically concentrated quick flow, and slowflow groundwater end-member pathways for periods of up to 2 years in a groundwater.
Estimates of Nitrate-N Loading to South Puget Sound by Groundwater Discharge: November PCB Concentrations in Fish from Ward Lake (Thurston County) and the Lower Elwha River: September Restover Truck Stop Ground Water Monitoring, January and July September River and Stream Ambient Monitoring Report.
Map of the no discharge zone. The Vessel Sewage No Discharge Zone includes all Washington marine waters east of New Dungeness Light, at the east end of the Strait of Juan de Fuca, plus Lake Washington, Lake Union, and the waters that connect them to Puget Sound. The potential nitrate load to the bays from the base flow of streams was estimated to bepounds per year, assuming that the concentration of nitrate in stream base flow is milligrams per liter, which is the median concentration of nitrate in ground water in the study area.The water quality of the Chesapeake Bay may be adversely affected by dissolved nitrate carried in groundwater discharge to streams.
To estimate the concentrations, loads, and yields of nitrate from groundwater to streams for the Chesapeake Bay watershed, a regression model was developed based on measured nitrate concentrations from small.
Many of Florida’s large springs have seen an order of magnitude increase in nitrate concentration since the mid-twentieth century, which has contributed to the proliferation of nuisance algae and alteration of spring ecosystems.
Cost-effective strategies to limit nitrate inputs require identification of contributing land areas within springs (springsheds) where surficial nitrogen sources are.