USGS - science for a changing world

USGS Surface Water Information

 Home Data Info Data & Information Activities Activities Methods & Modeling Methods & Modeling Publications Publications OSW Contact Contact Us

New & Noteworthy

T&M Chapters
Stage, Discharge, & Levels

WaterAlert USGS WaterAlert

Streamflow Summary 2014 Streamflow Summary

Threatened Streamgages Threatened and Recently Discontinued Streamgages

Calendar Streamgaging Calendar

Today's Water Conditions

View maps of current and historical conditions

Click map to go to current water resources conditions in the U.S. WaterWatch Streamflow
Flood & High Flow Flood and high flow
Drought Drought
Groundwater Networks Groundwater levels
Water Quality Watch Surface water quality

USGS in Your State

USGS Water Science Centers are located in each state.

 [Map: There is a USGS Water Science Center office in each State.] Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii and Pacific Islands New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Other Water Sites

OGW Office of Ground Water

OWQ Office of Water Quality

OHR Office of Hydrologic Research

OHR Cooperative Water Program

PDF Reader!

Documents are presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Transport Modeling

Please contact the osw team with questions.


Technical Memos
GW 93.01 Establishment of a National Policy to Archive Ground-Water Flow and Transport Models
SW 98.02 Distribution of ASCE Report, "Predicting Travel Time and Dispersion in Rivers and Streams," by Harvey E. Jobson

Prediction of Traveltime and Longitudinal Dispersion in Rivers and Streams - WRIR 96-4013

ID2020TC Modeling Flow and Transport in a Riverine Environment
QW1022TC Water Quality Principles

BLTM - Branched Lagrangian Transport Model
HSPF - Hydroogical Simulation Program--Fortran
FEQ - Full Equations Model, flow model
FourPt - An unsteady, one-dimensional, open-channel flow model


The DAFLOW model is currently being linked to the MODFLOW groundwater model to allow the simulation of surface-water/ground-water interactions. Linkage of BLTM to MODFLOW is planned for the near future.
A GUI interface for the DAFLOW/BLTM transport modeling system is under development.

Other Links
The USGS Surface-water quality and flow Modeling Interest Group
HASS User Software

USGS Home Water Resources Biology Geography Geology Geospatial

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: USGS Office of Surface Water
Page Last Modified: Wednesday, 10-Feb-2016 19:17:05 EST