High Point 6550 32nd Avenue Southwest • Seattle , Washington
Reduce downstream damage from runoff
Safely move, control, contain rainwater
Capture rain for reuse (of all kinds, human and natural, from irrigation and toilet flushing to groundwater recharge)
Restore or create habitat
The basic stormwater management concept at High Point is capture, convey, cleanse, and either infiltrate or detain and discharge as much as possible, through a site-specific, sequential combination of management techniques on each block. Roof runoff travels via downspout to a flow-through filter planter or rain barrel or conveyance furrow or pipe/pop-up emitter to a rain garden. Further runoff infiltrates through porous paving or flows via grassy swales to dispersal trenches along sidewalks. If that doesn’t address all rain volume, excess runoff then moves to NDS swales that run along street rights-of way and any remaining runoff from huge storms goes to a large, central, wet detention basin. Overall, High Point strives to achieve a 40% pervious/60% impervious ratio (compared to the city’s typical 25%/75%), and successfully reverts 8% of the Longfellow Creek basin to pre-development pasture conditions.
Rarely have we encountered an ARD that so joyfully celebrates rain—and in a 120-acre community, no less! The developers’ commitment to use the natural drainage system as a means to promote community is insightful, commendable, and evident throughout the property: High Point’s branding message focuses on environmental stewardship, and especially rain. The prevalence of this unified message undoubtedly contributes to a sense of place and community: residents of High Point know what this place is about, and everyone who lives here “buys in” to this ethic. Let’s hope that High Point’s “rain brand” becomes a national model.