b. Wire flags mark an area of painted ground.
Figure 8 (cont'd).
Figure 9. Paint layer depth within block of sediment is measured to define sedimenta-
tion rates.
June, August and September 1992, May and Sep-
diam.) schedule-40 PVC pipe. The pipe was in-
tember 1993 and May and September 1994 (Fig.
serted into the pond until the bottom of the cup
10). Samplers were installed in eight additional
was in contact with the bed (Fig. 11b and 12).
sites in 1994. Gross pond deposition was mea-
Sediment trapped in the cup includes new sedi-
sured in a sediment trap consisting of a 4-in.-
ment brought into the ponds by tidal inundation
diam. (10.2-cm-diam.) schedule-40 PVC pipe end
and river currents, and materials resuspended by
cap glued to a short length of 2-in.-diam. (5-cm-
wind waves, dabbling ducks or other mechanisms.
13
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