WaterWare On-line Manuals: SPILL/BLTM

WaterWare
Reference &
User Manual

WaterWare On-line Manuals

Release Level

6.2

Release Date

2010 05

Revision Level

1.0

Last modified on: Thursday, 20-May-10 18:36 CEST

WaterWare models: SPILL/BLTM water quality Model

SPILL/BLTM is a dynamic (hourly) water quality model to describe short-term and local scenarios of short-term pollution loads such as storm runoff or accidental spills. The model can describe conservative or first order decaying pollutants. An extension for oil spill is in preparation.

SPILL/BLTM is base on the Branched Lagrangian Transport Model (BLTM) originally develop by the USGS. BLTM uses Lagrangian calculations that are unconditionally stable and based upon a reference frame that moves at a velocity equal to the mean channel flow velocity. BLTM results are within the accuracy required by most water-quality studies. The BLTM is easily applied to unsteady flows in networks of one-dimensional channels with fixed geometry and tributary inflows. Reaction kinetics can be provided in a user-written decay-coefficient subroutine. The model routes one or more possibly interacting constituents through a system of one-dimensional channels.

Scenario Editor Geometry Editor Pollutant loading Model results Breakthrough curves

Scenario selection

After login, a selector list of available scenarios is shown.

The list includes, for each scenario, its

scenario short name
scenario owner
description (first 32 characters)
last modification date
start date of the scenario
location

The list can be sorted by any of the fields shown and lexicographical order, ascending or descending; the order ir reversed by a second click on the same field name. The text field above each column can be used for filtering: any text string typed there is matched with the contents of the corresponding field, and only matching entries are show.

To select a scenario, use the left mouse button while the corresponding record is highlighted.

To create a new scenario, use the button labeled new scenario on top of the listing.

DOCUMENTATION

Jobson, H.E., 1997,: Enhancements to the Branched Lagrangian transport modeling system: U.S. Geological Survey Water-Resources Investigations Report 97-4050, 57 p.
Jobson, H.E., and Schoellhamer, D.H., 1987,: Users manual for a Branched Lagrangian transport model: U.S. Geological Survey Water-Resources Investigations Report 87-4163, 73 p.
Schoellhamer, D.H., and Jobson, H.E., 1986,: Programmers manual for a one-dimensional Lagrangian transport model: U.S. Geological Survey Water-Resources Investigations Report 86-4144, 101 p.
Schoellhamer, D.H., and Jobson, H.E., 1986,: Users manual for a one-dimensional Lagrangian transport model: U.S. Geological Survey Water-Resources Investigations Report 86-4145, 95 p.

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