Estimating Water Fluxes Across the Sediment–Water Interface in the Lower Merced River, California

Scientific Investigations Report 2007–5216

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5216

Table 2. Objective and description of field measurements using seepage meters.

[Bag manufacturers: shower bag—Sun Solar Shower bag; medical bag—Medical Supply Bag; packaging bag—Void Packaging, Inc.]

Sampling event	Field measurement period	Seepage meter array	Seepage meter size	Bag type	Objective
1	December 1–4, 2003	1	large	shower bag	Compare seepage rates between bag types and paired meters.
			small	medical bag	Compare seepage rates between bag types and paired meters.
2	January 28–29, 2004	1	large	shower bag	Compare measured rates using shower and medical bags in first 24-hour period to measured rates using only packaging bags in second 24-hr period.
			small	medical bag
	January 29–30, 2004	1	large	packaging bag
			small	packaging bag
3	February 10–11, 2004	1	large	shower bag	Compare measured rates using shower and medical bags in first 24-hour period to measured rates using only packaging bags in second 24-hr period.
			small	medical bag
	February 11–12, 2004	1	large	packaging bag
			small	packaging bag
4	July 20–21, 2004	2	large	packaging bag	Compare measured rates between repeat measurements using same bag types and compare measured rates between seepage meters.
			small	packaging bag
	July 21–22, 2004	2	large	packaging bag
			small	packaging bag
5	September 21–22, 2004	2	large	packaging bag	Compare measured rates between repeat measurements using same bag types and compare measured rates between seepage meters.
			small	packaging bag
	September 22–23, 2004	2	large	packaging bag
			small	packaging bag
6	September 22–23, 2004	2	large	packaging bag	Compare measured rates between repeat measurements using same bag types and compare measured rates between seepage meters.
			small	packaging bag
	September 23–24, 2004	2	large	packaging bag
			small	packaging bag