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200 Foot Riparian Data
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The value of trees
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Table 17
Land cover Distribution: |
806 acres (16%) Disturbed Land (Graded/Grubbed)
507 acres (10%) Impervious Roads
135 acres (3%) Impervious Buildings
1,978 acres (40%) Open Space/Pasture/Meadow
1,418 acres (28%) Forest Patches
108 acres (2%) Water
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Stormwater Management in: cubic feet................................. 9,095,740
(one time value) U.S. dollars..............................$18,191,480 Annual Air Pollution Removal Value in: pounds....................................334,163
U.S. dollars.............................$694,819
Total Carbon Stored: tons...........................................2131
Carbon Sequestered Annually: tons..........................................16.59
Total Economic Benefit: U.S. dollars.............................$18,886,300
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| Scroll down for more detailed information about the above data . |
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200 FOOT BUFFER
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11.5% of UGB
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Total Area:
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7.78 sq mi
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a
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2059.29 sq. km (hectares)
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4,979.72 acres
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Land Cover Composition:
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108.13 acres
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02.17% of 200 ft Buffer
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- Water Area (100)
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a
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1,417.52 acres
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28.47% of 200 ft Buffer
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- Forest Patches
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a
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1,978.19 acres
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39.72% of 200 ft Buffer
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- Grass w/ Scattered Shrubs
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a
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805.93 acres
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16.18% of 200 ft Buffer
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- Disturbed land (87)
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aa
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134.77 acres
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02.71% of 200 ft Buffer
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- Impervious Surfaces: Buildings
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a
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507.49 acres
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10.19% of 200 ft Buffer
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- Impervious Surfaces: Paved Streets
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Definitions:
- Forest Patches (Wooded or forested with non-turf understory): Woods grazed but not burned, some forest litter (Fair Hydrologic Condition).
- Grass/Scattered Trees (Lawns, parks, golf courses, cemeteries, etc.): Grass cover < 50% (Poor Hydrologic Condition).
- Disturbed land - Graded, grubbed, minimal vegetation.
- Impervious Surfaces: Buildings, pavilions and other man-made structures, paved streets, open ditches.
- Sequestration: The rate a tree adds carbon to its biomass.
- Carbon storage: The amount of carbon stored in tree biomass.
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Ecological Services:
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Carbon Removal Benefits:
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a
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- Age Distribution:
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Average or Unknown
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a
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- Storage Capacity (tons):
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2,130.86
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- Sequestration Rate (tons/year):
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16.59
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a
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Air Pollution Removal Benefits:
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aa
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- Air-Quality Reference City:
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Seattle
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- Contaminant:
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Lbs/Year:
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Dollar Value:
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a
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- - O3
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121,720.99
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$ 373,630.94
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a
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- - SO2
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52,491.56
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$ 39,467.71
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a
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- - NO2
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0
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$ 0.00
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a
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- - PM10
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131,426.97
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$ 269,291.59
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a
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- - CO
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28,523.71
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$ 12,429.60
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a
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Totals:
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334,163.23
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$ 694,819.84
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c
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cc
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c
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c
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a
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Stormwater Runoff Control Benefits :
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- Avg. 2-yr, 24-hour Precipitation (in.):
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5.5
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- Site Avg. Slope (%):
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19.9
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- Rainfall Region:
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IA
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a
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- Hydrologic Soil Group:
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C
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aaa
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Current Conditions
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Modeled w/out trees
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- Curve Number:
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83
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85
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- Runoff Depth (in):
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3.63
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3.83
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- Time of Concentration (hrs):
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1.84
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1.72
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- Peak Flow (cfs):
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2,457.03
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2,663.54
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- Runoff Volume (cu. ft.):
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65,612,288.14
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69,283,133.58
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- Storage required to mitigate the change in peak flow (cu. ft.):
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9,095,739.90
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Total Economic Benefit of Trees in Salem UGB
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- Construction Cost ( @ $2.00/ cu ft.):
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$18,191,479.80
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