Prioritized Crossings

Fish Passage Priorities

Prioritized Crossings - 2002 Clear and Foster Creek Fish Passage Assessment

Of 158 crossings found on fish bearing streams, 81 had some degree of blockage to fish passage (based on methods described in the Final Report). Of these 81 crossings, 27 were complete blockages and 54 were partial blockages. Full fish passage blockage occurs on crossings with jumps greater than 4 feet and a culvert gradient greater than 4%. Partial fish passage blockage occurs in culverts greater than 6 inches in diameter with a slope greater than 0.5% if adequate downstream backwatering is not present.

Of the 81 blockages, 34 are on streams that are thought to have anadromous fish species use. Anadromous fish use was determined by examining historical information regarding fish use in the Clear and Foster Creek basins and evaluating 16 key natural barriers that prevent anadromous travel. These natural barriers were discovered and/or documented during summer 2002 fieldwork. Higher prioritization was given to anadromous habitat compared to resident fish habitat.

We prioritized 77 crossings based on habitat quality alone or habitat quality and cost of replacement. Four crossings were removed from the pool of crossings because of missing data.


Prioritized by habitat quality

1. CL209 - Middle Clear Creek, Pipe in Clear Ck.

2. CL069A - Middle Clear Creek, Private

3. CL088 - Little Clear Creek, Redland

4. CL216 - Middle Clear Creek, Private

5. CL123 - Lower Clear Creek, Springwater

6. FO003 - Foster Creek, Gerber

7. FO002 - Foster Creek, Gerber

8. CL068 - Little Clear Creek, BLM trail

9. CL100 - Lower Clear Creek, Priv. Cedarhurst

10. CL101 - Lower Clear Creek, Sylvan

11. CL099 - Lower Clear Creek, Mattoon

12. CL067 - Little Clear Creek, BLM trail

13. CL122 - Lower Clear Creek, Babler

14. CL116 - Lower Clear Creek,

15. CL106 - Lower Clear Creek, Fishers Mill

16. CL217 - Lower Clear Creek, Private

17. CL042 - Middle Clear Creek, Private

18. CL079 - Middle Clear Creek, Clear Ck.

19. CL119 - Lower Clear Creek, McCubbin

20. CL046 - Upper Clear Creek, Hillockburn

21. CL046B - Upper Clear Creek, 211

22. CL038 - Upper Clear Creek,

23. CL016 - Upper Clear Creek, off Elwood

24. CL118 - Lower Clear Creek, Hattan

25. CL211 - Upper Clear Creek, Private

26. CL232 - Lower Clear Creek,

27. CL125 - Lower Clear Creek, Hattan Rd.

28. CL083 - Middle Clear Creek, Redland

29. CL115 - Lower Clear Creek,

30. CL128 - Lower Clear Creek, off Springwater

31. CL047 - Middle Clear Creek, Private

32. CL120 - Lower Clear Creek, Gerber

33. CL036 - Upper Clear Creek, Brenton

34. FO007 - Foster Creek, Harding

35. CL007 - Upper Clear Creek, USFS 45

36. CL060 - Little Clear Creek, Lower Highland

37. CL065 - Little Clear Creek, Viola Welch

38. CL087 - Middle Clear Creek,

39. CL108 - Lower Clear Creek, Private

40. CL069C - Middle Clear Creek, Private

41. CL003 - Upper Clear Creek,

42. CL229 - Upper Clear Creek, Skinner

43. CL045 - Upper Clear Creek, Habelt

44. CL213 - Upper Clear Creek, Private

45. CL214 - Upper Clear Creek, Private

46. CL215 - Upper Clear Creek, Private

47. CL224 - Middle Clear Creek, Mattoon

48. CL108A - Lower Clear Creek, Dam

49. CL052 - Middle Clear Creek, Upper Highland

50. CL089 - Lower Clear Creek,

51. CL084 - Middle Clear Creek, Clear Ck. Rd.

52. CL058B - Little Clear Creek, Lower Highland

53. CL064 - Little Clear Creek, S. Lower Highland

54. CL109 - Lower Clear Creek, Mattoon

55. CL233 - Lower Clear Creek,

56. CL069D - Middle Clear Creek, Private

57. CL051 - Middle Clear Creek, private

58. CL113 - Lower Clear Creek,

59. CL069E - Middle Clear Creek, Private

60. CL095 - Lower Clear Creek, Mattoon

61. CL225 - Middle Clear Creek, Fellows

62. CL223 - Little Clear Creek, Lower Highland

63. CL053A - Middle Clear Creek, Private

64. CL143 - Upper Clear Creek,

65. FO016 - Foster Creek, Eaden

66. CL030 - Upper Clear Creek, Hillockburn

67. FO011 - Foster Creek, off Gerber

68. CL069F - Middle Clear Creek, Private

69. CL006 - Upper Clear Creek,

70. CL057 - Little Clear Creek, Lower Highland

71. CL066 - Little Clear Creek, Lower Highland

72. CL230 - Upper Clear Creek, Nawratil

73. CL226 - Middle Clear Creek, Wallens

74. CL220 - Upper Clear Creek, Private

75. CL231 - Middle Clear Creek, Upper Highland

76. CL228 - Upper Clear Creek, Morgan

77. CL227 - Upper Clear Creek, Hillockburn


Prioritized by habitat quality/replacement cost

1. CL209 - Middle Clear Creek, Pipe in Clear Ck.

2. CL069A - Middle Clear Creek, Private

3. CL216 - Middle Clear Creek, Private

4. CL100 - Lower Clear Creek, Priv. Cedarhurst

5. FO002 - Foster Creek, Gerber

6. CL123 - Lower Clear Creek, Springwater

7. CL042 - Middle Clear Creek, Private

8. CL217 - Lower Clear Creek, Private

9. CL211 - Upper Clear Creek, Private

10. CL128 - Lower Clear Creek, off Springwater

11. CL016 - Upper Clear Creek, off Elwood

12. CL116 - Lower Clear Creek,

13. CL101 - Lower Clear Creek, Sylvan

14. CL047 - Middle Clear Creek, Private

15. CL079 - Middle Clear Creek, Clear Ck.

16. CL108 - Lower Clear Creek, Private

17. CL069C - Middle Clear Creek, Private

18. CL088 - Little Clear Creek, Redland

19. CL122 - Lower Clear Creek, Babler

20. CL215 - Upper Clear Creek, Private

21. CL118 - Lower Clear Creek, Hattan

22. CL214 - Upper Clear Creek, Private

23. CL232 - Lower Clear Creek,

24. CL068 - Little Clear Creek, BLM trail

25. CL213 - Upper Clear Creek, Private

26. CL067 - Little Clear Creek, BLM trail

27. CL106 - Lower Clear Creek, Fishers Mill

28. CL125 - Lower Clear Creek, Hattan Rd.

29. CL058B - Little Clear Creek, Lower Highland

30. CL115 - Lower Clear Creek,

31. CL233 - Lower Clear Creek,

32. CL083 - Middle Clear Creek, Redland

33. CL051 - Middle Clear Creek, private

34. CL046B - Upper Clear Creek, 211

35. CL120 - Lower Clear Creek, Gerber

36. CL099 - Lower Clear Creek, Mattoon

37. FO011 - Foster Creek, off Gerber

38. FO007 - Foster Creek, Harding

39. CL069D - Middle Clear Creek, Private

40. CL108A - Lower Clear Creek, Dam

41. CL053A - Middle Clear Creek, Private

42. CL069E - Middle Clear Creek, Private

43. FO003 - Foster Creek, Gerber

44. CL069F - Middle Clear Creek, Private

45. CL038 - Upper Clear Creek,

46. CL064 - Little Clear Creek, S. Lower Highland

47. CL065 - Little Clear Creek, Viola Welch

48. CL045 - Upper Clear Creek, Habelt

49. CL089 - Lower Clear Creek,

50. CL060 - Little Clear Creek, Lower Highland

51. CL087 - Middle Clear Creek,

52. CL036 - Upper Clear Creek, Brenton

53. CL007 - Upper Clear Creek, USFS 45

54. CL113 - Lower Clear Creek,

55. CL223 - Little Clear Creek, Lower Highland

56. CL224 - Middle Clear Creek, Mattoon

57. CL119 - Lower Clear Creek, McCubbin

58. CL220 - Upper Clear Creek, Private

59. CL084 - Middle Clear Creek, Clear Ck. Rd.

60. CL046 - Upper Clear Creek, Hillockburn

61. CL225 - Middle Clear Creek, Fellows

62. CL052 - Middle Clear Creek, Upper Highland

63. CL228 - Upper Clear Creek, Morgan

64. CL066 - Little Clear Creek, Lower Highland

65. CL229 - Upper Clear Creek, Skinner

66. CL003 - Upper Clear Creek,

67. CL057 - Little Clear Creek, Lower Highland

68. FO016 - Foster Creek, Eaden

69. CL143 - Upper Clear Creek,

70. CL230 - Upper Clear Creek, Nawratil

71. CL030 - Upper Clear Creek, Hillockburn

72. CL109 - Lower Clear Creek, Mattoon

73. CL231 - Middle Clear Creek, Upper Highland

74. CL095 - Lower Clear Creek, Mattoon

75. CL226 - Middle Clear Creek, Wallens

76. CL006 - Upper Clear Creek,

77. CL227 - Upper Clear Creek, Hillockburn

For more information regarding the 2002 Clear and Foster Creek Fish Passage Assessment or to request a copy of the final report, please contact the Clackamas River Basin Council at clackamasriver.org.