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Lower Claggett Watershed Data
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The value of trees
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Table 3
Land cover Distribution: |
210 acres (22%) Disturbed Land (Graded/Grubbed)
48 acres (5%) Impervious Buildings
460 acres (47%) Open Space/Pasture/Meadow
113 acres (11%) Forest Patches
3 acres (0.3%) Water
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Stormwater Management in: cubic feet................................. 1,324,764
(one time value) U.S. dollars..............................$2,649,528Annual Air Pollution Removal Value in: pounds....................................65,590
U.S. dollars.............................$136,381
Total Carbon Stored: tons..........................................418
Carbon Sequestered Annually: tons..........................................3.26
Total Economic Benefit: U.S. dollars.............................$2,785,910
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a |
| Scroll down for more detailed information about the above data . |
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A |
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Total Area:
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1.52 sq. miles
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a
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393.38 sq. km (hectares)
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a
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972.03 acres
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a
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Landcover Composition:
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0.30% of LOWER CLAGGETT
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02.91 acres
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- Water Area (100)
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a
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11.62% of LOWER CLAGGETT
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112.94 acres
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- Forest Patches
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a
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47.38% of LOWER CLAGGETT
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460.52 acres
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- Grass w/ Scattered Shrubs
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a
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21.61% of LOWER CLAGGETT
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210.09 acres
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- Disturbed land (87)
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a
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04.95% of LOWER CLAGGETT
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48.14 acres
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- Impervious Surfaces: Buildings
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mm
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14.14% of LOWER CLAGGETT
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137.40 acres
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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 at which 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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418.25
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a
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- Sequestration Rate (tons/year):
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3.26
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a
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dd
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a
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Air Pollution Removal Benefits:
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a
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- Air-Quality Reference City:
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Seattle
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a
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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 (Ozone)
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23,891.83
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$ 73,337.62
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a
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- - SO2 (Sulfur Dioxide)
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10,303.23
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$ 7,746.86
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a
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- - NO2 (Nitrogen dioxide)
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0
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$ 0.00
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a
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- - PM10 (particulates <10 microns)
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25,796.96
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$ 52,857.52
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a
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- - CO (Carbon monoxide)
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5,598.74
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$ 2,439.73
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a
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Totals:
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65,590.76
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$ 136,381.74
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A
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A
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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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4.25
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s
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- Site Avg. Slope (%):
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3.59
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s
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- Rainfall Region:
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IA
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s
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- Hydrologic Soil Group:
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C
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s
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aaa
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Current Conditions
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Modeled w/out trees
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s
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- Curve Number:
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86
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87
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s
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- Runoff Depth (in):
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2.77
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2.87
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s
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- Time of Concentration (hrs):
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1.78
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1.72
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s
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- Peak Flow (cfs):
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371.03
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388.88
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s
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- Runoff Volume (cu. ft.):
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9,786,969.20
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10,115,548.41
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s
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- Storage required to mitigate the change in peak flow (cu. ft.):
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1,324,764.22
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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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$2,649,528.43
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