Montgomery County
Active Sites
| STREAM | GROUP | MONITOR | SITE | COUNT | START | END | MIN | MEAN | MAX | MIN | MEAN | MAX |
| NAME | NUMBER | DATE | DATE | pH | pH | pH | ALK | ALK | ALK | |||
| Perkiomen (EB) | Landis | 116 | 277 | 5/7/88 | 4/14/04 | 5.0 | 6.8 | 8.0 | 5.0 | 38.15 | 100.0 |
Last Updated on 9/24/04
By ALLARM
Historic Sites
| STREAM | GROUP | MONITOR | SITE | COUNT | START | END | MIN | MEAN | MAX | MIN | MEAN | MAX |
| NAME | NUMBER | DATE | DATE | pH | pH | pH | ALK | ALK | ALK | |||
| Abrams Creek | Wilkinson | 233 | 8 | 3/18/90 | 5/14/90 | 6.0 | 7.0 | 8.0 | 45.0 | 53.75 | 65.0 | |
| Briar Bush Natur | Heffner | 136b | 22 | 2/17/89 | 6/19/90 | 6.0 | 6.1 | 7.0 | 20.0 | 32.14 | 40.0 | |
| Perkiomen | Wojtowitz | 250 | 99 | 7/15/90 | 4/25/93 | 6.0 | 7.1 | 8.0 | 35.0 | 67.34 | 105.0 | |
| Perkiomen | Wroblewski | 74b | 30 | 2/7/88 | 11/13/88 | 7.0 | 7.5 | 8.0 | 8.0 | 54.89 | 110.0 | |
| Perkiomen Creek | Meir | 72 | 34 | 3/12/88 | 6/23/89 | 6.0 | 6.9 | 8.0 | 30.0 | 61.68 | 85.0 | |
| Sandy Run Cr | Ashmead | 106 | 16 | 5/2/88 | 2/18/89 | 7.0 | 7.4 | 8.0 | 115.0 | 144.06 | 185.0 | |
| Stoney Cr | Ryan | 225 | 9 | 7/2/90 | 11/8/90 | 7.0 | 7.4 | 8.0 | 85.0 | 94.44 | 100.0 | |
| Stony Creek | Schirk | 302 | 197 | 1/29/91 | 11/12/99 | 5.0 | 7.4 | 8.0 | 22.0 | 89.62 | 168.0 | |
| Towamencin Creek | Stiles | 261 | 31 | 7/25/90 | 4/10/91 | 6.0 | 7.4 | 9.0 | 45.0 | 77.10 | 135.0 | |
| Wissahickon | Miles | 232 | 103 | 10/4/89 | 12/25/91 | 6.0 | 7.4 | 8.0 | 75.0 | 126.41 | 200.0 |
Last Updated on 9/24/04
By ALLARM