Find examples of construction techniques, management, and planning issues.
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
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
A side drainage is subject to flooding along Highline Canal in Aurora, Colorado