Somerset County

Somerset County
( 40.54516, -74.62073 )

  1. Ambrose Brook - Bound Brook ( 40.56764, -74.51489 )
  2. Ambrose Brook - Possumtown ( 40.55555, -74.48630 )
  3. D-R Canal - Amwell Rd ( 40.50340, -74.58268 )
  4. D-R Canal - Blackwells Mills ( 40.47550, -74.57220 )
  5. D-R Canal - Griggstown (N) ( 40.43834, -74.61397 )
  6. D-R Canal - Griggstown (S) ( 40.42912, -74.61816 )
  7. D-R Canal - Kingston (N) ( 40.37489, -74.61854 )
  8. D-R Canal - Kingston (S) ( 40.37326, -74.61861 )
  9. D-R Canal - Manville ( 40.52861, -74.58178 )
  10. D-R Canal - New Brunswick ( 40.50806, -74.46376 )
  11. D-R Canal - Plainsboro (E) ( 40.34321, -74.62964 )
  12. D-R Canal - Plainsboro (W) ( 40.34190, -74.63758 )
  13. D-R Canal - Princeton (N) ( 40.33879, -74.64715 )
  14. D-R Canal - Princeton (S) ( 40.33177, -74.65282 )
  15. D-R Canal - Rocky Hill ( 40.39826, -74.62702 )
  16. D-R Canal - Somerset (N) ( 40.54077, -74.51404 )
  17. D-R Canal - Somerset (S) ( 40.52390, -74.49248 )
  18. D-R Canal - South Bound Brook ( 40.55880, -74.53118 )
  19. Dallenbach Pond ( 40.41254, -74.44296 )
  20. Davidson's Mill Pond - East Brunswick ( 40.41117, -74.49789 )
  21. Delaware River ( 40.17371, -74.84843 )
  22. East Amwell Lake ( 40.40023, -74.84316 )
  23. Farrington Lake - East Brunswick (C) ( 40.42465, -74.47680 )
  24. Farrington Lake - East Brunswick (N) ( 40.43900, -74.46646 )
  25. Farrington Lake - East Brunswick (S) ( 40.42201, -74.48242 )
  26. Green Brook - Billian Legion Park ( 40.56222, -74.52483 )
  27. Helmetta Pond ( 40.37817, -74.42657 )
  28. Lake Carnegie - Plainsboro ( 40.34362, -74.62973 )
  29. Lake Carnegie - Princeton ( 40.36681, -74.62597 )
  30. Lamington/Black River - Pottersville ( 40.71374, -74.72011 )
  31. Lawrence Brook - Milltown (E) ( 40.45144, -74.43663 )
  32. Lawrence Brook - Milltown (W) ( 40.44831, -74.44367 )
  33. Mill Pond - Princeton Meadows (E) ( 40.32460, -74.56567 )
  34. Mill Pond - Princeton Meadows (W) ( 40.32735, -74.60233 )
  35. Millstone River - Amwell Rd ( 40.50294, -74.58755 )
  36. Millstone River - Blackwells Mills ( 40.47487, -74.57503 )
  37. Millstone River - Griggstown ( 40.43893, -74.61757 )
  38. Millstone River - Kingston ( 40.37419, -74.61962 )
  39. Millstone River - Manville ( 40.53124, -74.58753 )
  40. Millstone River - Plainsboro (N) ( 40.34262, -74.62981 )
  41. Millstone River - Plainsboro (S) ( 40.33874, -74.62880 )
  42. Millstone River - Rocky Hill (N) ( 40.39957, -74.62809 )
  43. Millstone River - Rocky Hill (S) ( 40.39969, -74.62867 )
  44. Millstone River - West Windsor ( 40.32139, -74.60831 )
  45. New Market Pond - Piscataway ( 40.57675, -74.45490 )
  46. Passaic River - Basking Ridge ( 40.69503, -74.51600 )
  47. Passaic River - Dead River ( 40.65005, -74.52464 )
  48. Passaic River - Warren ( 40.67078, -74.46441 )
  49. Raritan River - Bound Brook ( 40.55995, -74.52758 )
  50. Raritan River - Branchburg ( 40.55644, -74.68838 )
  51. Raritan River - Duke Island (E) ( 40.56082, -74.64751 )
  52. Raritan River - Duke Island (W) ( 40.55279, -74.68330 )
  53. Raritan River - Edison ( 40.48791, -74.38382 )
  54. Raritan River - Highland Park ( 40.48864, -74.42226 )
  55. Raritan River - New Brunswick ( 40.48760, -74.43280 )
  56. Raritan River - Piscataway (N) ( 40.54085, -74.51236 )
  57. Raritan River - Piscataway (S) ( 40.50935, -74.46641 )
  58. Raritan River - Power Canal ( 40.55112, -74.67136 )
  59. Raritan River - Raritan ( 40.56492, -74.63884 )
  60. Raritan River - Sayreville ( 40.47450, -74.35606 )
  61. Raritan River - Somerville (E) ( 40.55798, -74.61520 )
  62. Raritan River - Somerville (W) ( 40.56539, -74.63173 )
  63. Raritan River North Branch ( 40.60018, -74.67447 )
  64. Raritan River North Branch - Far Hills ( 40.68441, -74.64214 )
  65. Raritan River North Branch - Natirar Park ( 40.64761, -74.68024 )
  66. Raritan River North Branch Depot ( 40.58160, -74.68161 )
  67. Raritan River South Branch ( 40.54640, -74.69603 )
  68. Raritan River South Branch - Flemington (C) ( 40.52105, -74.82666 )
  69. Raritan River South Branch - Flemington (E) ( 40.50354, -74.77814 )
  70. Raritan River South Branch - Flemington (N) ( 40.53810, -74.83934 )
  71. Raritan River South Branch - Hamden ( 40.59699, -74.89827 )
  72. Raritan River South Branch - Neshanic (E) ( 40.50873, -74.72776 )
  73. Raritan River South Branch - Neshanic (W) ( 40.50250, -74.74182 )
  74. Raritan River South Branch - Rte 31 ( 40.56315, -74.85544 )
  75. Raritan River South Branch - Stanton ( 40.57219, -74.86834 )
  76. Raritan River South Branch - Sunnyside ( 40.57942, -74.88795 )
  77. Round Valley Reservoir - Clinton (N) ( 40.63204, -74.84726 )
  78. Round Valley Reservoir - Clinton (S) ( 40.61800, -74.84664 )
  79. South River - Sayreville ( 40.45397, -74.37222 )
  80. South River - South River ( 40.45838, -74.38361 )
  81. Stony Brook - Princeton ( 40.33219, -74.65340 )
  82. Watchung Lake - North Plainfield ( 40.63723, -74.45384 )
  83. Weston's Mill Pond - East Brunswick ( 40.46677, -74.42603 )

Lake Carnegie
( 40.35303, -74.63730 )

  1. D-R Canal - Kingston (N) ( 40.37489, -74.61854 )
  2. D-R Canal - Kingston (S) ( 40.37326, -74.61861 )
  3. D-R Canal - Plainsboro (E) ( 40.34321, -74.62964 )
  4. D-R Canal - Plainsboro (W) ( 40.34190, -74.63758 )
  5. D-R Canal - Princeton (N) ( 40.33879, -74.64715 )
  6. D-R Canal - Princeton (S) ( 40.33177, -74.65282 )
  7. Lake Carnegie - Plainsboro ( 40.34362, -74.62973 )
  8. Lake Carnegie - Princeton ( 40.36681, -74.62597 )
  9. Millstone River - Kingston ( 40.37419, -74.61962 )
  10. Millstone River - Plainsboro (N) ( 40.34262, -74.62981 )
  11. Millstone River - Plainsboro (S) ( 40.33874, -74.62880 )
  12. Stony Brook - Princeton ( 40.33219, -74.65340 )

Lake Carnegie is a reservoir that straddles the borders of the towns of Princeton, West Windsor, Plainsboro and South Brunswick in Mercer and Middlesex counties in central New Jersey. The lake was created by construction of a dam along the Millstone River, though the lower portion of the lake actually follows the valley of its largest tributary, the Stony Brook, while the Millstone River crossed under the D&R Canal to the south. The lake is about three miles long, but only about 800 feet wide.


Delaware & Raritan Canal
( 40.38309, -74.68637 )

  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.


Passaic River
( 40.80476, -74.31517 )

  1. Newark Bay - Bayonne ( 40.66284, -74.13305 )
  2. Newark Bay - Rutkowski Park ( 40.68882, -74.11216 )
  3. Passaic River - Basking Ridge ( 40.69503, -74.51600 )
  4. Passaic River - Chatham ( 40.73795, -74.37159 )
  5. Passaic River - Chatham ( 40.72583, -74.38948 )
  6. Passaic River - Dead River ( 40.65005, -74.52464 )
  7. Passaic River - East Hanover (N) ( 40.82749, -74.33529 )
  8. Passaic River - East Hanover (S) ( 40.82581, -74.33332 )
  9. Passaic River - Elmwood Park ( 40.90965, -74.13188 )
  10. Passaic River - Fairfield ( 40.89775, -74.27988 )
  11. Passaic River - Hawthorne ( 40.93992, -74.15224 )
  12. Passaic River - Kearny ( 40.76313, -74.15933 )
  13. Passaic River - Livingston ( 40.77879, -74.36862 )
  14. Passaic River - Memorial Park ( 40.92865, -74.14193 )
  15. Passaic River - Newark ( 40.73326, -74.15206 )
  16. Passaic River - Nutley ( 40.81175, -74.13909 )
  17. Passaic River - Passaic ( 40.86506, -74.11144 )
  18. Passaic River - Riverside County Park (N) ( 40.81865, -74.13348 )
  19. Passaic River - Riverside County Park (S) ( 40.80182, -74.13801 )
  20. Passaic River - Rutherford ( 40.82349, -74.12280 )
  21. Passaic River - Veteran's Park ( 40.85042, -74.11898 )
  22. Passaic River - Warren ( 40.67078, -74.46441 )

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A weir or low-head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of lakes, ponds, and reservoirs. There are many weir designs, but commonly water flows freely over the top of the weir crest before cascading down to a lower level.

Even though the water around weirs can often appear relatively calm, they can be extremely dangerous places to boat, swim, or wade, as the circulation patterns on the downstream side - typically called a hydraulic jump - can submerge a person indefinitely. This phenomenon is so well known to canoeists, kayakers, and others who spend time on rivers that they even have a rueful name for weirs: "drowning machines".

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