Water Bugs

Whirligig Beetle

Whirligig Beetles are typically found in groups making crazy circles at the surface, although they are also capable of diving and flying. These are ‘true beetles’, not bugs. They are harmless scavengers.

Wikipedia

Note:

The rest of these bugs have a painful bite, like a wasp sting.

Water Scorpion

Above is the aptly-named Water Scorpion. These are generally found underwater in plant growth, although they fly very well, as do all waterbugs. If you are launching the boat through weeds, watch out for them, although you’d have to go out of your way to actually get bit.

Wikipedia


Water Boatman

In my experience, Water Boatmen are the most common waterbugs – you can find them in almost any still waters. They swim right-side-up with enlarged back legs. Water Boatmen feed primarily on algea, and are unlikely to bite.

Wikipedia


Backswimmer

Backswimmers are similar to Water Boatmen, but swim upsidedown, as their name implies. They are predatory, and have a painful bite.

Wikipedia


Giant Water Bug

You are more likely to see a Giant Water Bug on your porch than out on the lake. This is because they are strong night fliers, and attracted to lights. Like all waterbugs, they can bite, and given the size of them – ‘Giant’ – I imagine they bite pretty good.

Wikipedia


  1. D-R Canal - Amwell Rd ( 40.50340, -74.58268 )
  2. D-R Canal - Blackwells Mills ( 40.47550, -74.57220 )
  3. D-R Canal - Griggstown (N) ( 40.43834, -74.61397 )
  4. D-R Canal - Griggstown (S) ( 40.42912, -74.61816 )
  5. D-R Canal - Kingston (N) ( 40.37489, -74.61854 )
  6. D-R Canal - Kingston (S) ( 40.37326, -74.61861 )
  7. D-R Canal - Lawrence (N) ( 40.27450, -74.70332 )
  8. D-R Canal - Lawrence (S) ( 40.26746, -74.71071 )
  9. D-R Canal - Lawrenceville ( 40.30501, -74.68490 )
  10. D-R Canal - Manville ( 40.52861, -74.58178 )
  11. D-R Canal - New Brunswick ( 40.50806, -74.46376 )
  12. D-R Canal - North Trenton ( 40.24901, -74.72865 )
  13. D-R Canal - Plainsboro (E) ( 40.34321, -74.62964 )
  14. D-R Canal - Plainsboro (W) ( 40.34190, -74.63758 )
  15. D-R Canal - Princeton (N) ( 40.33879, -74.64715 )
  16. D-R Canal - Princeton (S) ( 40.33177, -74.65282 )
  17. D-R Canal - Province Line Rd ( 40.30273, -74.68819 )
  18. D-R Canal - Rocky Hill ( 40.39826, -74.62702 )
  19. D-R Canal - Somerset (N) ( 40.54077, -74.51404 )
  20. D-R Canal - Somerset (S) ( 40.52390, -74.49248 )
  21. D-R Canal - South Bound Brook ( 40.55880, -74.53118 )
  22. D-R Canal - Trenton (N) ( 40.23886, -74.74194 )
  23. D-R Canal - Trenton (S) ( 40.18384, -74.74666 )
  24. D-R Canal - West Windsor ( 40.30844, -74.67979 )
  25. D-R Feeder Canal - Bull Island ( 40.41036, -75.03421 )
  26. D-R Feeder Canal - Ewing ( 40.26529, -74.84790 )
  27. D-R Feeder Canal - Lambertville (S) ( 40.34206, -74.94044 )
  28. D-R Feeder Canal - Rt 202 ( 40.37987, -74.95175 )
  29. D-R Feeder Canal - Washington Crossing ( 40.29842, -74.86852 )
  30. D-R Feeder Canal - West Trenton ( 40.24497, -74.81917 )
  31. Lake Carnegie - Plainsboro ( 40.34362, -74.62973 )
  32. Millstone River - Amwell Rd ( 40.50294, -74.58755 )
  33. Millstone River - Blackwells Mills ( 40.47487, -74.57503 )
  34. Millstone River - Griggstown ( 40.43893, -74.61757 )
  35. Millstone River - Kingston ( 40.37419, -74.61962 )
  36. Millstone River - Manville ( 40.53124, -74.58753 )
  37. Millstone River - Plainsboro (N) ( 40.34262, -74.62981 )
  38. Millstone River - Rocky Hill (N) ( 40.39957, -74.62809 )
  39. Millstone River - Rocky Hill (S) ( 40.39969, -74.62867 )
  40. Stony Brook - Princeton ( 40.33219, -74.65340 )

The blue line on the map is the Delaware & Raritan, or D&R, Canal. The canal is a basically 40-mile-long pond. The water flows very slowly from west to east; it is essentially still. Access points generally coincide with bridges or locks.

The thin red line is the “fall line” – the nominal division between uplands and lowlands. It appears the builders of the canal wanted to stay above the fall line for the entire length, and followed the Millstone and Raritan Rivers. The series of dams resulting in a chain of lakes along the Lawrence Brook reveals a shorter alternate route the canal might have taken. These dams were not built until over 100 years later. Perhaps surveying in the 1830s was not good enough to discover this, or perhaps it would not work, but it certainly looks like it should.

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