Table 5. Quantiles of attribute values for analysis units in the Puget Lowland, Puget Sound Basin, Washington.
[Abbreviations: AU, analysis unit; km2, square kilometer; km/km2, kilometer per square kilometer; m, meter; m/yr, meter per year]
Quantile
(fraction
of all AUs) |
Area
(km2) |
Elevation
(m) |
Slope
(percent) |
Precipitation
(m/yr) |
Stream
density
(km/km2) |
Alluvium
fraction |
Coarse-
grained
fraction |
Fine-
grained
fraction |
Bedrock
fraction |
Forest
fraction |
Wetland
fraction |
Impervious
fraction |
Road
density
(km/km2) |
Fraction of
AU gaged
fraction |
| 0.1 |
1.8 |
27 |
0.03 |
0.67 |
0.7 |
0.00 |
0.00 |
0.00 |
0.00 |
0.12 |
0.01 |
0.00 |
1.1 |
0.00 |
| 0.2 |
2.4 |
39 |
0.05 |
0.80 |
1.0 |
0.00 |
0.00 |
0.12 |
0.00 |
0.24 |
0.01 |
0.01 |
1.7 |
0.00 |
| 0.3 |
3.0 |
49 |
0.07 |
0.96 |
1.2 |
0.00 |
0.05 |
0.27 |
0.05 |
0.37 |
0.02 |
0.02 |
2.2 |
0.00 |
| 0.4 |
3.7 |
62 |
0.08 |
1.04 |
1.4 |
0.00 |
0.10 |
0.42 |
0.10 |
0.50 |
0.03 |
0.02 |
2.7 |
0.00 |
| 0.5 |
5.1 |
75 |
0.10 |
1.10 |
1.6 |
0.01 |
0.16 |
0.52 |
0.16 |
0.59 |
0.04 |
0.04 |
3.3 |
0.00 |
| 0.6 |
7.4 |
90 |
0.11 |
1.19 |
1.9 |
0.03 |
0.23 |
0.63 |
0.23 |
0.65 |
0.05 |
0.05 |
3.9 |
0.00 |
| 0.7 |
9.7 |
108 |
0.13 |
1.28 |
2.1 |
0.06 |
0.30 |
0.72 |
0.30 |
0.71 |
0.06 |
0.08 |
4.7 |
0.00 |
| 0.8 |
12.4 |
135 |
0.17 |
1.38 |
2.5 |
0.13 |
0.43 |
0.81 |
0.43 |
0.78 |
0.08 |
0.15 |
6.0 |
0.02 |
| 0.9 |
16.4 |
219 |
0.24 |
1.70 |
3.1 |
0.36 |
0.62 |
0.90 |
0.62 |
0.85 |
0.12 |
0.30 |
8.9 |
0.16 |
| 1.0 |
46.4 |
1,549 |
0.70 |
4.11 |
10.6 |
1.00 |
1.00 |
1.00 |
1.00 |
0.99 |
0.92 |
0.94 |
25.9 |
1.00 |
|