Find examples of construction techniques, management, and planning issues.
Elaborate trail sign with map and directions to points of interest; Willamette River Greenway, Portland, Oregon
Sign in Spanish as well as English warns of possible flash floods along the Cherry Creek Trail in Denver, Colorado
The Boulder Creek Trail runs below the water level with a retaining wall to keep out normal flows; the sign warns people not to shelter from rain here in case of flooding
A side drainage is subject to flooding along Highline Canal in Aurora, Colorado