Skip to main content

DEVELOPMENT OF HYDRAULIC INPUTS FOR A NUTRIENT TMDL WATER-QUALITY MODEL OF THE NON-TIDAL PASSAIC RIVER BASIN, NEW JERSEY

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

The U.S. Geological Survey, in cooperation with the New Jersey Department of Environmental Protection and the New Jersey EcoComplex, has developed a streamflow routing model that provides the transient hydraulic inputs to a watershed water-quality model to be used in establishing a total maximum daily load (TMDL) for nutrients in the Passaic River Basin. The Passaic River Basin, the third largest basin in New Jersey, drains approximately 950 square miles in the heavily urbanized northeastern part of the state, and supplies drinking water for approximately 2 million people. Water quality in the basin is affected by many point-source discharges and diversions, nonpoint-source runoff from areas of mixed land use and varying geology, complex river-system hydraulics, ground-water/surface-water interactions, and water use. The diversion of water at the Wanaque South Intake, near the confluence of the Pompton and Passaic Rivers, to the Wanaque Reservoir is of major concern because it may contribute to eutrophication of the reservoir.

A one-dimensional, open-channel, flow-routing computer program (DAFLOW) was used to simulate flows representing a range of flow conditions in the non-tidal portion of the basin during 1999–2003. This finite-difference program is based on the diffusion wave form of the St. Venant unsteady-flow equations and geomorphic principles combined with a Lagrangian solution scheme. Model boundary conditions consist of observed flows at upstream gaging stations, estimated tributary flows, and reported major point-source-discharge and diversion flows. A procedure based on comparisons of drainage-basin and other characteristics was developed to help select the most appropriate index gages to be used for estimating tributary flows. Simulated mass balance, flood-wave timing and attenuation, flow duration, flow velocity, and depth at downstream gaging stations were calibrated to their observed counterparts for a dry year and were validated for a extreme dry year, wet year, and average year. Simulated results were within the accuracy of observed flow data in most cases. An algorithm was developed for use with DAFLOW to represent the complex mixing that occurs near the Wanaque South Intake and to determine the variation in flow from local sources to the intake. A dye tracer study will help with calibration and validation of the algorithm.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864705783967052

Publication date: January 1, 2005

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites
wef/wefproc/2005/00002005/00000003/art00076
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more