Scientific Investigations Report 2008–5027
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5027
Table 1. Sites sampled for pesticides in the lower Clackamas River basin, Oregon, 2000–2005.
[Map No. shown in figure 1. Land-cover data were derived from the 30-meter resolution USGS National Land Cover Data collected in 2001 (NLCD01) (U.S. Geological Survey, 2005). Primary land cover: Open space in urban areas includes greenways, lawns, parks, and other open areas. Forest includes evergreen, deciduous, and mixed forests (NLCD categories 41, 32, and ND 43) (Anderson and others, 1976). Abbreviations: NAWQA, National Water-Quality Assessment Program; EUSE, Effects of Urbanization on Stream Ecosystems (USGS NAWQA study); SWQA, Source Water-Quality Assessment (USGS NAWQA study); DWTP, drinking-water treatment plant; nd, no data; na, not applicable; mi2, square mile; >, greater than]
| Map No. | Drainage area (mi2) | Sampling site | Number of samples | Primary land cover (percent basin area) | Study (years) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agriculture | Urban land cover | Forest | ||||||||||||||
| Cultivated crops | Pasture/ hay | Urban intensity | Open space | Phase 1 (2000–01) | EUSE (2003–04) | SWQA (2002–05) | Phase 2 (2005) | |||||||||
| Low | Medium | High | ||||||||||||||
| – | – | Clackamas River at DWTP (finished drinking water) | 18 | na | X | X | X | |||||||||
| – | – | Clackamas River at DWTP (source water) | 34 | nd | X | X | X | |||||||||
| 25 | 920 | Clackamas River at Carver | 1 | 74 percent forest/5 percent agriculture+urban1 | X | |||||||||||
| 29 | 680 | Clackamas River at Estacada | 1 | 79 percent forest1 | X | |||||||||||
| 1 | 1.3 | Cow Creek at mouth, near Gladstone | 2 | 0.0 | 2.7 | 16.5 | 35.0 | 30.6 | 9.8 | 2.5 | X | |||||
| 2 | 0.6 | Carli Creek upstream from mouth, near Clackamas | 2 | 0.0 | 7.0 | 20.4 | 26.9 | 35.2 | 8.4 | 0.1 | X | |||||
| 3 | 1.7 | Sieben Creek at Highway 224 | 5 | 0.1 | 8.7 | 21.8 | 24.1 | 3.4 | 17.9 | 16.0 | X | X | ||||
| 4 | 0.7 | Sieben Creek downstream of Sunnyside Road | 1 | 0.0 | 3.4 | 22.3 | 20.0 | 2.0 | 17.8 | 21.4 | X | |||||
| 5 | 9.5 | Rock Creek near mouth | 3 | 3.8 | 27.6 | 11.4 | 2.7 | 0.3 | 15.6 | 26.2 | X | X | ||||
| 6 | 0.1 | Trillium Creek at Anderegg Parkway, near Damascus | 2 | 0.0 | 0.5 | 31.6 | 18.6 | 1.9 | 19.4 | 13.0 | X | |||||
| 7 | 7.3 | Rock Creek at Stoneybrook Court downstream from 172nd Avenue | 1 | 2.7 | 27.5 | 9.9 | 1.1 | 0.1 | 14.8 | 29.6 | X | |||||
| 8 | 5.3 | Rock Creek at 172nd Avenue | 2 | 2.8 | 26.8 | 9.1 | 1.0 | 0.1 | 13.9 | 32.1 | X | |||||
| 9 | 2.2 | Rock Creek at Foster Road | 1 | 1.2 | 26.4 | 8.0 | 0.8 | 0.0 | 14.4 | 33.1 | X | |||||
| 10 | 3.9 | Richardson Creek near Highway 224 | 3 | 4.9 | 26.3 | 15.3 | 2.4 | 1.0 | 19.5 | 20.1 | X | X | ||||
| 26 | 87 | Clear Creek at Carver | 2 | 67 percent forest1 | X | |||||||||||
| 27 | 59 | Deep Creek at Highway 224 | 2 | 37 percent forest/28 percent agricultural+urban1 | X | |||||||||||
| 11 | 3.1 | Noyer Creek at mouth, near Barton | 2 | 5.5 | 41.2 | 9.8 | 1.8 | 0.2 | 11.2 | 19.8 | X | |||||
| 12 | 2.1 | Noyer Creek downstream from Highway 212, near Damascus | 2 | 7.3 | 39.1 | 12.4 | 2.2 | 0.3 | 14.7 | 15.0 | X | |||||
| 20 | 32 | Deep Creek at Camp Kuratli, near Barton | 1 | 19.5 | 11.9 | 3.7 | 1.9 | 0.6 | 5.6 | 42.8 | X | |||||
| 28 | 12.1 | Deep Creek near Sandy | 6 | nd | X | |||||||||||
| 13 | 14.3 | North Fork Deep Creek at Barton | 8 | 21.8 | 25.3 | 10.8 | 3.4 | 1.1 | 11.8 | 12.4 | X | X | ||||
| 14 | 10.9 | North Fork Deep Creek upstream from weir, near Boring | 1 | 27.0 | 22.0 | 11.8 | 3.9 | 1.3 | 13.1 | 7.7 | X | |||||
| 15 | 10.1 | North Fork Deep Creek at Boring | 1 | 28.6 | 21.9 | 11.2 | 3.5 | 1.0 | 12.4 | 7.7 | X | |||||
| 18 | 0.7 | North Fork Deep Creek tributary at Church Road, near Boring | 1 | 18.8 | 23.4 | 19.2 | 2.8 | 0.6 | 14.6 | 8.4 | X | |||||
| 19 | 0.2 | North Fork Deep Creek tributary at 312th Avenue, near Boring | 1 | 56.3 | 13.2 | 10.0 | 9.1 | 1.4 | 3.7 | 1.2 | X | |||||
| 16 | 6.5 | Doane Creek downstream from Highway 212, near Boring | 1 | 23.9 | 23.0 | 10.5 | 2.9 | 0.9 | 13.0 | 8.9 | X | |||||
| 17 | 2.6 | Dolan Creek downstream from Orient Road, near Boring | 1 | 29.6 | 20.5 | 9.3 | 1.9 | 0.3 | 12.0 | 10.9 | X | |||||
| 21 | 12.9 | Tickle Creek near Boring | 7 | 21.9 | 11.8 | 5.9 | 4.2 | 1.4 | 7.1 | 34.5 | X | X | ||||
| 24 | 3.6 | Tickle Creek at 362nd Avenue, near Sandy | 1 | 31.4 | 1.7 | 8.8 | 7.8 | 2.1 | 7.1 | 34.0 | X | |||||
| 23 | 1.3 | Tickle Creek tributary at Orient Road, near Sandy | 1 | 5.0 | 22.5 | 9.2 | 8.5 | 3.5 | 8.8 | 18.6 | X | |||||
| 22 | 2.1 | Tickle Creek tributary at Colorado Road, near Sandy | 1 | 32.9 | 14.3 | 3.4 | 0.9 | 0.1 | 5.7 | 30.6 | X | |||||
| 30 | 109 | Eagle Creek at Bonnie Lure State Park | 2 | >80 percent forest1 | X | |||||||||||
1Land cover data from Carpenter (2003).
U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/
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