The Residence is a 3-acred .2 ha) landscape design and restoration project overloo» ~: the scenic Columbia River Gorge near The Dalles, Oregon. Riverside sandy soils over 5 massive formations of bedrock that are at times exposed and more typically lay 6 to 2! (15-76 cm) below the surface. Shallow basalt bedrock prevents infiltration causing sc^t areas to be easily saturated and quickly parched. These site-specific conditions crea*- • variety of planting conditions that rely heavily on the adaptability of regional species
Climate conditions are equally varied. Frigid winters with temperatures near 0°F(-1S . and summers with sustained temperatures between 90°F and 110°F (32°C~43cC)c-: limited rainfall reduce the survival rate of plants other than native species that ha»« evolved in the area.
Fluctuating river flows bring invasive plant species from up-stream urbanized locations do seasonally strong winds and migrating Canadian Geese that visit the site. Neighbc* properties also harbor non-native invasive species that require vigilance to contro -seasonal regimen of site reconnaissance was instituted to combat non-native and inva? plant species including grass species that are very difficult to selectively eradicate.
2005 Award of Excellence in General Design, American Society of Landscape Architects.
The purpose of the project was to provide the clients with a landscape that display stewardship toward the native landscape and minimizes the visual intrusion of their home, guest house and boat shed on the shores of the Columbia River. This goal consistent with the philosophy of the landscape architect and the architect whose build - cs respect the natural site by mitigating environmental and visual impact by accentua* the dramatic nature of a site. The vertical profile of the buildings was reduced by be " g partially buried below grade. The guesthouse and boat shed were designed with c-fr roofs that mitigate their visual intrusion and provide thermal insulation. Low maimers-was also a motivating factor for the clients who feel the natural landscape is the
: -atenals were placed to frame ri.r^ce of views throughout the jr^pefty i and drop-off road showing how -ere choreographed to minimize ua ^pact of automobiles.
—f t svategy to reduce energy consumption and maintenance.
r ": whose recreational focus is windsurfing, also enjoy entertaining guests and m . : ? "hey believe their landscape is a 'seed' project that may influence aesthetic --id land stewardship in the area in contrast with neighboring landscapes that f :eisive energy and resources to maintain in this region.
. - sery was contracted to hand collect seed of native plants and grow them for this -. : ants that are native but too rare to be found for seed collection were imported V:~:ana. Native sagebrush was transplanted from overgrazed and disturbed sites : -: -: Nourishes in its new home.
t : e Koch Landscape Architecture was to design and coordinate the construction of : -::: that enhances and restores the site's natural characteristics and re-establishes t f v. :msh p to the regional landscape. Views within the site and the dramatic context r - - r • by naturalistic plantings from multiple positions giving the landscape a unique * .: z,namic. The modulation of the native landscape included: removal of invasive .: - t: *ne use of contract grown native and rare species, revealing hidden bedrock outcrops, recreating bedrock outcrops, native plantings, drip irrigation, and sustainable methods of maintenance.
The landscape design subtly integrates local landscape forms into the functional aspects of the site. The flat plain of the decomposed granite terrace mimics the early morning currents of the river and accentuates the calming feel. The minimalistic solemnity of the terrace also provides a relaxing contrast to the white capped wave action of the summer afternoons. Separation and screening is accomplished by modest landforms and selection of native plant types. The entry to the site was choreographed to eliminate the presence of cars in the main landscape area and living areas while providing convenient drop off points. Orientation of the garage and the design of the road were coordinated with the architects. A more conventional play field area was developed in front of the guesthouse over the existing septic system. A riverside terrace created for relaxation and entertainment was constructed with decomposed granite and contained by natural and recreated bedrock outcroppings. Informal paths approach the feel of trails and are routed through planting areas to the various buildings and lead visitor to framed views. This project exceeded the client's expectations to build with the landscape and to exhibit stewardship to nature and the Columbia River Gorge Scenic Area.
A view from the spa shows how the vertical profile of the building was reduced by being constructed partially below grade Informal paths approach the feel of trails linking green-roofed buildings on the property.
Shallow basalt bedrock prevents infiltration, causing some areas to be easily saturated, requiring dependence on regional plant species.
: . *-ench drain is placed at the edge of the outdoor living area as it transitions into the natural contours of the site. - :: aces are carved out of the fields of grass. The boundaries between designed and natural are subtle. - - plane of the Columbia River extends into the site at the terrace.
= Deposed granite terrace acts as a forecourt to the residence and provides a location to contemplate the spectacular scenery to the Gorge ? - /.-est and across the river to the basalt cliffs of the Washington State shore
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How would you like to save a ton of money and increase the value of your home by as much as thirty percent! If your homes landscape is designed properly it will be a source of enjoyment for your entire family, it will enhance your community and add to the resale value of your property. Landscape design involves much more than placing trees, shrubs and other plants on the property. It is an art which deals with conscious arrangement or organization of outdoor space for human satisfaction and enjoyment.