Sediment-Record Calculations (SEDCALC), a menu-driven set of interactive computer programs, was developed to facilitate computation of suspended-sediment records. The programs comprising SEDCALC were developed independently in several District offices of the U.S. Geological Survey (USGS) to minimize the intensive labor associated with various aspects of sediment-record computations.
SEDCALC operates on suspended-sediment-concentration data stored in American Standard Code for
Information Interchange (ASCII) files in a predefined card-image format. Program options within SEDCALC can be used to assist in creating and editing the card-image files, as well as to reformat card-image files to and from formats used by the USGS Water-Quality System.
SEDCALC provides options for creating card-image files containing time series of equal-interval suspended-sediment concentrations from
1. digitized suspended-sediment-concentration traces,
2. linear interpolation between log-transformed instantaneous
suspended-sediment-concentration data stored at unequal time
3. nonlinear interpolation between log-transformed
instantaneous suspended-sediment-concentration data
stored at unequal time intervals.
Suspended-sediment discharge can be computed from the streamflow and suspended-sediment-concentration data or by application of transport relations derived by regressing log-transformed instantaneous streamflows on log-transformed instantaneous suspended-sediment concentrations or discharges. The computed suspended-sediment discharge data are stored in card-image files that can be either directly imported to the USGS Automated Data Processing System or used to generate plots by means of other SEDCALC options.
Additional Publication Details
USGS Numbered Series
User's manual for SEDCALC, a computer program for computation of suspended-sediment discharge
U.S. Geological Survey ;
USGS Earth Science Information Center, Open-File Reports Section [distributor],