A Decision Support Framework to Facilitate Nitrogen Load Reductions in Long Island Sound (LIS) Watershed

Rangarajan, Sri; Farley, Kevin J.; Tedesco, Mark A.

doi:10.2175/193864707786619701

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The completed set of GWLF‐estimated component loads for each in‐basin subwatershed from this modeling study have also been input to the Poll‐Track spreadsheet tool (Rangarajan et al. , 2008) to be used in future analyses using various reduction strategies by watershed managers.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds¹

Georgas

Rangarajan²,

Farley

et al. 2009

J American Water Resour Assoc

Self Cite

View full text Add to dashboard Cite

The Generalized Watershed Loading Functions (GWLF) model and its ArcView interface (AVGWLF) were used to estimate and examine the components of the total nitrogen (TN) nonpoint source (NPS) load generated within New York and Connecticut (CT) watersheds surrounding Long Island Sound (LIS, the Sound). The majority of data used as model inputs were generally available from online sources, and the work involved an overall calibration to streamflow and TN data in accordance with generic guidelines recommended in the GWLF manual. The GWLF model performance for three calibration and two validation watersheds in CT was compared with results of a detailed model, Hydrological Simulation Program in Fortran, developed in a previous study. The results of the application illustrate the usefulness of the relatively simpler, less parameter‐intensive GWLF model in performing exploratory loading analysis in preparation for adaptive nutrient management in the LIS watersheds. The presented methodology is valuable for identification of priority watersheds for NPS pollution reduction and also for planning‐level evaluation of best management practices to achieve the desired reductions. It is estimated that ground‐water base flow may be the largest pathway for NPS TN to the Sound, contributing about 54% of the total NPS TN load, a finding with significant implications for LIS total maximum daily load reduction scenarios. In addition to ground water, septic systems are estimated to contribute about 17% of the total load, with the remaining TN load being mostly runoff from urban (17%), agricultural (5%), and low impact (e.g., forest) areas (6%).

show abstract

Section: Discussionmentioning

confidence: 99%

“…, 1997). As a follow‐up, the LIS Management Committee decided in 2005 to design a simple spreadsheet tool called Poll‐Track (Rangarajan et al. , 2008) that can be used by individual state/local agencies and municipalities to screen and select best management practices (BMP) to reduce in‐basin NPS TN loads by 10% or more.…”

Section: Introductionmentioning

confidence: 99%

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds¹

Georgas

Rangarajan²,

Farley

et al. 2009

J American Water Resour Assoc

Self Cite

View full text Add to dashboard Cite

show abstract

A Decision Support Framework to Facilitate Nitrogen Load Reductions in Long Island Sound (LIS) Watershed

Cited by 1 publication

References 0 publications

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds¹

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds¹

Contact Info

Product

Resources

About

A Decision Support Framework to Facilitate Nitrogen Load Reductions in Long Island Sound (LIS) Watershed

Cited by 1 publication

References 0 publications

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds1

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds1

Contact Info

Product

Resources

About

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds¹

AVGWLF‐Based Estimation of Nonpoint Source Nitrogen Loads Generated Within Long Island Sound Subwatersheds¹