2. Upper dam site

3. Above the dam ecotone- open field and mixed forest

4. The watershed has several ecotones- one is a temperate deciduous forest with white pine

5. Trees that remain in the watershed (below the dam) from the May 2006 flood

6. Upstream view of watershed from Saw Mill Road

7. Uprooted trees along the watershed

8. Even with water flow, debris collects in pockets along the downstream

9. Evidence of nutrient load from fallen leaves into the watershed

10. Below the dam- slower water flow and shallow depth

11. Path along lower watershed- temperate deciduous forest with white pine

12. Forest nutrient load below the dam

13. Leaf bags were placed above and below the dam to sample types of leaves that enter the watershed

14. Same leaves will have their proteins analyzed for molecular biology biodiversity and biomass analysis

15. Stream flow was measured to determine potential mixing of dissolved gases (DO and DCO2)

16. Deployment of leaf bags for nutrient load study and rock baskets for macro invertebrate diversity lab

17. Ripple area just above Saw Mill Road bridge lowest site for rock basket deployment

18. Below Saw Mill Road bridge- a pool after the ripple area

19. New boardwalk around the LS pond – beaver activity (our keystone species!) causes spring flooding

20. Higher than normal rainfall has caused higher water levels within the watershed

21. Marsh area from beaver activity forms the northern side of Lower School Pond

22. Lower School Pond looking upstream back to Saw Mill Road bridge

23. The Lower School pond abuts the Chapel and Ohrstrom lawns

24. Water testing on the Lower School Pond

25. Our “maiden voyage” on Lower School Pond

26. Penacook Lake thermocline study

27. Penacook Lake is the city of Concord’s water supply

28. Winter term the water treatment facility will be toured

29. Team effort to ready all the canoes and equipment

30. Advanced Biology – Limnology group shot

31. The thermocline data collected for the fall turnover will be compared with spring data, and the ASP’s summer data

32. Penacook Lake also provides habitat for nesting loons

33. Shallow, low turbidity, little algae and no invasive milfoil

34. Paddling to the sample site on Penacook Lake