Estimates of long-term suspended-sediment loads in Bay Creek at Nebo, Pike County, Illinois, 1940-80

Lazaro, Timothy R.; Fitzgerald, Kathleen K.; Frost, Leonard R., Jr.

Abstract:

Five years of daily suspended-sediment discharges (1968, 1969, 1975, 1976, and 1980) for Bay Creek at Nebo, Illinois, computed from once- or twice-weekly samples (more often during storm events), were used to develop transport equations that can be used to estimate long-term suspended-sediment discharges from long-term water-discharge records. Discharge was divided into three groups based on changes in slope on a graph of logarithms of water discharge versus suspended-sediment discharge. Two subgroups were formed within each of the three groups by determining whether the flow was steady or increasing, or was decreasing. Seasonality was accounted for by introducing day of the year in sine and cosine functions. The suspended-sediment load estimated from the equations for the 5 years was 77.3 percent of that computed from daily sediment- and water-discharge records for those years. The mean annual suspended-sediment load for 41 years of estimated loads was 359 ,500 tons, which represents a yield of about 3.5 tons per acre from the Bay Creek drainage basin. (USGS)

Genre:

USGS Numbered Series

ProdID:

28281

Citation Author:

Lazaro, Timothy R.; Fitzgerald, Kathleen K.; Frost, Leonard R., Jr.

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

ENGLISH

Citation Larger Work Title:

Citation LatN:

Citation LatS:

Citation LonE:

Citation LonW:

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

v, 22 p. :ill., maps ;28 cm.

Citation Projection:

Citation Public Comments:

Citation Publisher:

U.S. Geological Survey,

Citation Series:

Water-Resources Investigations Report

Citation Series Code:

WRI

Citation Series Number:

84-4003

Citation Search Results Text:

Estimates of long-term suspended-sediment loads in Bay Creek at Nebo, Pike County, Illinois, 1940-80; 1984; WRI; 84-4003; Lazaro, Timothy R.; Fitzgerald, Kathleen K.; Frost, Leonard R., Jr.

Citation Start Page:

Citation Volume:

Citation Year:

1984

Type:

citation/reference

Text:

Estimates of long-term suspended-sediment loads in Bay Creek at Nebo, Pike County, Illinois, 1940-80; 1984; WRI; 84-4003; Lazaro, Timothy R.; Fitzgerald, Kathleen K.; Frost, Leonard R., Jr.