[Science_Parameters: Science_Category='EARTH SCIENCE', Science_Topic='TERRESTRIAL HYDROSPHERE', Science_Term='SURFACE WATER', Science_Variable_Level_1='SURFACE WATER FEATURES', Science_Variable_Level_2='RIVERS/STREAMS']
Branch-Network Dynamic Flow ModelEntry ID: USGS_BRANCH
Abstract: The Branch-Network Dynamic Flow Model--BRANCH--is used to simulate
steady or unsteady flow in a single open-channel reach (branch) or
throughout a system of branches (network) connected in a dendritic
or looped pattern. BRANCH is applicable to a wide range of
hydrologic situations wherein flow and transport are governed by
time-dependent forcing functions. ... BRANCH is particularly suitable
for simulation of flow in complex geometric configurations involving
regular or irregular cross sections of channels having multiple
interconnections, but can be easily used to simulate flow in a
single, uniform open-channel reach. Time-varying water levels, flow
discharges, velocities, and volumes can be computed at any location
within the open-channel network. Streamflow routing and computation
by the BRANCH model is superior to simplified-routing methods in
open-channel reaches wherein severe backwater and (or) dynamic flow
conditions prevail. Typical uses of the model encompass the
assessment of flow and transport in upland rivers in which flows are
highly regulated or backwater effects are evident, or in coastal
networks of open channels wherein flow and transport are governed by
the interaction of freshwater inflows, tidal action, and
meteorological conditions. Surface- and ground-water interactions
can be simulated by the coupled BRANCH and USGS modular, three-
dimensional, finite-difference ground-water flow (MODFLOW) models,
referred to as MODBRNCH.
Role: TECHNICAL CONTACT
Email: h2osoft at usgs.gov
U.S.G.S. Hydrologic Analysis Software Support Program 437 National Center
Province or State: VA
Postal Code: 20192
Schaffranek, R.W., Baltzer, R.A., and Goldberg, D.E., 1981, A model for
simulation of flow in singular and interconnected channels: U.S. Geological
Survey Techniques of Water-Resources Investigations, book 7, chap. 3, 110 p.
Schaffranek, R.W., 1987, Flow model for open-channel reach or network: U.S.
Geological Survey Professional Paper 1384, 12 p.
Regan, R.S., and Schaffranek, R.W., 1985, A computer program for analyzing
channel geometry: U.S. Geological Survey Water-Resources Investigations Report
85-4335, 49 p.
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