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Middle Amazon Creek <br /> ( • To allow adequate conveyance, NO plants should be near bridges. Leave a distance of <br /> approximately one bridge width on either side of each bridge unplanted. Leave 20 feet <br /> unplanted centering on each outfall. <br /> • Black cottonwood should not be planted near structures, facilities, or gathering places, <br /> because older trees have a tendency to shed branches and frequently fail. Similarly, as <br /> trees mature they may need to be removed in areas where they put humans at risk. <br /> However, in some areas, it is desirable to maintain a younger, vigorous stand of <br /> cottonwoods and standing snags, that pose little risk to humans, to serve as habitat trees. <br /> • Along the fairgrounds, the north bank can be planted, while the south bank should remain <br /> open to allow for potential future widening. Passive revegetation of the south bank should <br /> be permitted, but willow cuttings should be used to plant the toe of the south slope to <br /> provide for cover until any future widening occurs. <br /> • Creek widening may also be feasible through Westmoreland Park, but there are no <br /> established plans at the time of this report. <br /> Cluster diagram example (to accommodate mowing requirements) <br /> Top of Bank < 10 -20' > < 10 -20" <br /> Upper Bank <br /> Lower Bank <br /> Creek <br /> C. <br /> Plants Total Number Plants Planting <br /> Latin Name Common Name Qty of Plants spacing Zone <br /> Both per within <br /> Banks Clusters Clusters <br /> Fraxinus latifolia Oregon ash 40 2 -4 10' 1 & 2 <br /> ,,, Pinus ponderosa Ponderosa pine 4 1 - 1 <br /> L-; Populus balsamifera ssp. Black cottonwood 8 1 - 2 <br /> H tricho. <br /> Salix lucida ssp. lasiandra Pacific willow 20 1 -2 10' 1 & 2 <br /> Amelachier alnifolia Western - - 1 <br /> serviceberry <br /> Berberis aquifolium Tall Oregon grape 30 3 5' 1 & 2 <br /> N <br /> Crataegus douglasii Black hawthorn 15 3 7' 2 <br /> Ribes sanguineum Red flowering 30 3 4' 1 <br /> in currant <br /> Rosa nootkana Nootka rose 12 3 4' 1 & 2 <br /> Salix hookeriana Hooker's willow 25 - - 3 <br /> Salix sitchensis Sitka willow 25 - 3 <br /> Symphoricarpus albus Snowberry 50 5 5' 1 & 2 <br /> L e Total 265 <br /> 19 <br />