31.   Volunteers also remove graffiti, pick up trash, repair trails along stream beds and assist in conducting fish-population surveys and constructing signs.

32.   With smaller rocks, he created a curving, low-maintenance stream bed that channels water at the foot of the hillside.

33.   Further down the hill, dozens of villagers cowered in shallow caves along the stream bed, or lay low in the muddy water itself.

34.   He said using the stream beds for disposal degrades water quality in violation of federal law.

35.   It has a duck-like bill to root about in stream beds for food.

36.   It grew from a boomtown to a center for large-scale hard-rock mining when the loose gold in the stream beds ran out.

37.   Representatives sent heavy equipment to level dirt streets, but the earthmovers piled dirt in a dry stream bed, blocking natural drainage and opening the settlement to floods.

38.   Silt from increased runoff has raised the stream bed, forcing communities along the river to depend on dikes for protection from floods.

39.   Stream beds turned to dust.