Table 6. Quantiles of attribute values for drainage areas of streamflow gages, Puget Sound Basin, Washington.
[Abbreviations: km2, square kilometer; km/km2, kilometer per square kilometer; m, meter; m/yr, meter per year]
Fraction of
active
streamflow
gages |
Area
(km2) |
Elevation
(m) |
Slope
(m/m) |
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
drainage
area in
Puget
Lowland |
| 0.1 |
3.6 |
87 |
0.05 |
1.01 |
0.7 |
0.00 |
0.01 |
0.00 |
0.01 |
0.09 |
0.01 |
0.00 |
0.5 |
0.0 |
| 0.2 |
7.3 |
105 |
0.06 |
1.09 |
1.0 |
0.00 |
0.04 |
0.02 |
0.04 |
0.15 |
0.04 |
0.01 |
1.1 |
0.0 |
| 0.3 |
12.7 |
123 |
0.08 |
1.18 |
1.2 |
0.00 |
0.08 |
0.08 |
0.08 |
0.25 |
0.06 |
0.01 |
1.6 |
0.2 |
| 0.4 |
21.8 |
150 |
0.10 |
1.30 |
1.5 |
0.01 |
0.13 |
0.16 |
0.13 |
0.36 |
0.09 |
0.01 |
2.2 |
0.5 |
| 0.5 |
33.5 |
213 |
0.15 |
1.48 |
1.8 |
0.02 |
0.16 |
0.35 |
0.16 |
0.51 |
0.12 |
0.03 |
2.8 |
1.0 |
| 0.6 |
55.2 |
398 |
0.23 |
1.76 |
2.2 |
0.04 |
0.20 |
0.50 |
0.20 |
0.59 |
0.14 |
0.05 |
3.6 |
1.0 |
| 0.7 |
105.1 |
631 |
0.32 |
1.95 |
2.7 |
0.05 |
0.25 |
0.61 |
0.25 |
0.67 |
0.16 |
0.09 |
4.6 |
1.0 |
| 0.8 |
217.8 |
872 |
0.43 |
2.38 |
3.2 |
0.07 |
0.35 |
0.77 |
0.35 |
0.73 |
0.19 |
0.21 |
6.9 |
1.0 |
| 0.9 |
579.8 |
1,072 |
0.54 |
2.86 |
3.8 |
0.11 |
0.51 |
0.84 |
0.51 |
0.78 |
0.21 |
0.38 |
10.6 |
1.0 |
| 1.0 |
8,042.7 |
1,570 |
0.72 |
4.13 |
5.3 |
1.00 |
0.92 |
1.00 |
0.92 |
0.93 |
0.39 |
0.67 |
14.2 |
1.0 |
|