Assessing Rivers for Restoration Purposes. Ann L. Riley Waterways Restoration Institute

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1 Assessing Rivers for Restoration Purposes Ann L. Riley Waterways Restoration Institute

2 Assessing Rivers for Restoration Purposes Ann L. Riley Waterways Restoration Institute

3 Assessing Rivers for Restoration Purposes Ann L. Riley Waterways Restoration Institute

4 Aliso Creek dam Grade controls can act as small dams and create channel instabilities.

5 Aliso Creek below dam Hungry water takes out long reaches of riparian restoration.

6 Encroachment

7 Torrey Pine Creek (failed grade control) Grade controls, large and small often are the source of channel problems.

8 Sacramento River (meander around rocks) Riprap often has failure built in to its use.

9 Baxter Creek (failing riprap) Failure of riprap occurs at all scales, small creeks and large rivers.

10 Steven's Creek too narrow Common problem: structural fixes without knowledge about stable creek shapes.

11 San Juan River(too straight) The channelization steepened the slope which caused incision and then failure of concrete lining on a federal flood control project.

12 Excess Sediment slope issues It has been common for flood control channels to be designed at unsustainable slopes.

13 Culvert caused Gully (San Diego) Headcuts frequently form above culverts put in a the wrong slope.

14 New Pinole Creek trestle : too low for next 100 years This locks in flooding problems upstream for another few generations.

15 Common Post Construction Problems Assessments need to address how to respond to, and avoid these common problems if river functions are to improve.

16 Meander in Concrete-lined Creek Channel We need to address sustainable channel slopes and meanders.

17 Step pool design Steep gradient streams need to address step pool design for restoration.

18 Napa tame river The Zen of flood control design for the Napa River, California.

19 Napa River floodplain restore mouth and lower flood level upstream Removing hydraulic constrictions: the first step in assessments to solve problems.

20 Napa pasture to floodplain This new floodplain lowers flood level by 3 feet in downtown area.

21 Napa demolish buildings

22 Napa floodplain restoration

23 Napa floodplain restoration

24 Napa new habitat in flood and marsh plain Monitoring shows habitat functions of restored floodplain.

25 Old Maxwell bridge

26 Maxwell bridge rebuilt to remove constriction

27 3rd street bridge :old

28 New third street bridge Bridge replacements which serve as key strategies to reducing flood damages should be part of federal cost sharing on projects: This is more sustainable than dredging the river repeatedly.

29 Napa downtown restoration River restoration is downtown restoration and builds the local economy.

30 Downtown river access

31 Willow Posts (driven into creek bank) New Assessment tools are helping guide the appropriate use of vegetation for river stabilization.

32 Willow Posts (sprouting quickly) Soli bioengineering can perform well under high shear stresses, and these are quantifiable.

33 Willowstand (bank stabilization)

34 Hydraulic constriction 1995

35 VUPRRT Hydraulic constrictions can endanger trains and the surrounding community.

36 Codornices culvert before This culvert prevented floodplain restoration.

37 Codornices culvert rebuild by RR to move flood flows The floodplain and channel restoration design informed the culvert replacement.

38 New Pinole creek trestle creating flooding This train trestle was dropped on a restored floodplain harming its functional values and performance.

39 Geomorph context needs to inform assessments Process based assessments can inform management actions and result in permits which protect the environment.

40 Channel evolution sketches can be rapid assessments which indicate level of degradation, the route to recovery and inform restoration or management.

41 Hey channel evol 0002 This represents one page of many process sketches which can be used to provide rapid assessments which can be applied to describing condition and guide appropriate management strategies.

42 Bankfull X-section Area (Bay Area graph) Restoration curves developed by regions can also provide rapid assessments on whether a channel is significantly different from others with similar watershed areas. A first level assessment.

43 Destabilizing Practices (Channel Widening) Examples of rapid process sketches which can inform management needs and developing solutions. Process assessments don t have to be too complicated to be useful.

44 Aliso Creek dam Grade controls can act as small dams and create channel instabilities.

45 Aliso Creek below dam Hungry water takes out long reaches of riparian restoration.

46 Encroachment

47 Torrey Pine Creek (failed grade control) Grade controls, large and small often are the source of channel problems.

48 Sacramento River (meander around rocks) Riprap often has failure built in to its use.

49 Baxter Creek (failing riprap) Failure of riprap occurs at all scales, small creeks and large rivers.

50 Steven's Creek too narrow Common problem: structural fixes without knowledge about stable creek shapes.

51 San Juan River(too straight) The channelization steepened the slope which caused incision and then failure of concrete lining on a federal flood control project.

52 Excess Sediment slope issues It has been common for flood control channels to be designed at unsustainable slopes.

53 Culvert caused Gully (San Diego) Headcuts frequently form above culverts put in a the wrong slope.

54 New Pinole Creek trestle : too low for next 100 years This locks in flooding problems upstream for another few generations.

55 Common Post Construction Problems Assessments need to address how to respond to, and avoid these common problems if river functions are to improve.

56 Meander in Concrete-lined Creek Channel We need to address sustainable channel slopes and meanders.

57 Step pool design Steep gradient streams need to address step pool design for restoration.

58 Napa tame river The Zen of flood control design for the Napa River, California.

59 Napa River floodplain restore mouth and lower flood level upstream Removing hydraulic constrictions: the first step in assessments to solve problems.

60 Napa pasture to floodplain This new floodplain lowers flood level by 3 feet in downtown area.

61 Napa demolish buildings

62 Napa floodplain restoration

63 Napa floodplain restoration

64 Napa new habitat in flood and marsh plain Monitoring shows habitat functions of restored floodplain.

65 Old Maxwell bridge

66 Maxwell bridge rebuilt to remove constriction

67 3rd street bridge :old

68 New third street bridge Bridge replacements which serve as key strategies to reducing flood damages should be part of federal cost sharing on projects: This is more sustainable than dredging the river repeatedly.

69 Napa downtown restoration River restoration is downtown restoration and builds the local economy.

70 Downtown river access

71 Willow Posts (driven into creek bank) New Assessment tools are helping guide the appropriate use of vegetation for river stabilization.

72 Willow Posts (sprouting quickly) Soli bioengineering can perform well under high shear stresses, and these are quantifiable.

73 Willowstand (bank stabilization)

74 Hydraulic constriction 1995

75 VUPRRT Hydraulic constrictions can endanger trains and the surrounding community.

76 Codornices culvert before This culvert prevented floodplain restoration.

77 Codornices culvert rebuild by RR to move flood flows The floodplain and channel restoration design informed the culvert replacement.

78 New Pinole creek trestle creating flooding This train trestle was dropped on a restored floodplain harming its functional values and performance.

79 Geomorph context needs to inform assessments Process based assessments can inform management actions and result in permits which protect the environment.

80 Channel evolution sketches can be rapid assessments which indicate level of degradation, the route to recovery and inform restoration or management.

81 Hey channel evol 0002 This represents one page of many process sketches which can be used to provide rapid assessments which can be applied to describing condition and guide appropriate management strategies.

82 Bankfull X-section Area (Bay Area graph) Restoration curves developed by regions can also provide rapid assessments on whether a channel is significantly different from others with similar watershed areas. A first level assessment.

83 Destabilizing Practices (Channel Widening) Examples of rapid process sketches which can inform management needs and developing solutions. Process assessments don t have to be too complicated to be useful.

84 Aliso Creek dam Grade controls can act as small dams and create channel instabilities.

85 Aliso Creek below dam Hungry water takes out long reaches of riparian restoration.

86 Encroachment

87 Torrey Pine Creek (failed grade control) Grade controls, large and small often are the source of channel problems.

88 Sacramento River (meander around rocks) Riprap often has failure built in to its use.

89 Baxter Creek (failing riprap) Failure of riprap occurs at all scales, small creeks and large rivers.

90 Steven's Creek too narrow Common problem: structural fixes without knowledge about stable creek shapes.

91 San Juan River(too straight) The channelization steepened the slope which caused incision and then failure of concrete lining on a federal flood control project.

92 Excess Sediment slope issues It has been common for flood control channels to be designed at unsustainable slopes.

93 Culvert caused Gully (San Diego) Headcuts frequently form above culverts put in a the wrong slope.

94 New Pinole Creek trestle : too low for next 100 years This locks in flooding problems upstream for another few generations.

95 Common Post Construction Problems Assessments need to address how to respond to, and avoid these common problems if river functions are to improve.

96 Meander in Concrete-lined Creek Channel We need to address sustainable channel slopes and meanders.

97 Step pool design Steep gradient streams need to address step pool design for restoration.

98 Napa tame river The Zen of flood control design for the Napa River, California.

99 Napa River floodplain restore mouth and lower flood level upstream Removing hydraulic constrictions: the first step in assessments to solve problems.

100 Napa pasture to floodplain This new floodplain lowers flood level by 3 feet in downtown area.

101 Napa demolish buildings

102 Napa floodplain restoration

103 Napa floodplain restoration

104 Napa new habitat in flood and marsh plain Monitoring shows habitat functions of restored floodplain.

105 Old Maxwell bridge

106 Maxwell bridge rebuilt to remove constriction

107 3rd street bridge :old

108 New third street bridge Bridge replacements which serve as key strategies to reducing flood damages should be part of federal cost sharing on projects: This is more sustainable than dredging the river repeatedly.

109 Napa downtown restoration River restoration is downtown restoration and builds the local economy.

110 Downtown river access

111 Willow Posts (driven into creek bank) New Assessment tools are helping guide the appropriate use of vegetation for river stabilization.

112 Willow Posts (sprouting quickly) Soli bioengineering can perform well under high shear stresses, and these are quantifiable.

113 Willowstand (bank stabilization)

114 Hydraulic constriction 1995

115 VUPRRT Hydraulic constrictions can endanger trains and the surrounding community.

116 Codornices culvert before This culvert prevented floodplain restoration.

117 Codornices culvert rebuild by RR to move flood flows The floodplain and channel restoration design informed the culvert replacement.

118 New Pinole creek trestle creating flooding This train trestle was dropped on a restored floodplain harming its functional values and performance.

119 Geomorph context needs to inform assessments Process based assessments can inform management actions and result in permits which protect the environment.

120 Channel evolution sketches can be rapid assessments which indicate level of degradation, the route to recovery and inform restoration or management.

121 Hey channel evol 0002 This represents one page of many process sketches which can be used to provide rapid assessments which can be applied to describing condition and guide appropriate management strategies.

122 Bankfull X-section Area (Bay Area graph) Restoration curves developed by regions can also provide rapid assessments on whether a channel is significantly different from others with similar watershed areas. A first level assessment.

123 Destabilizing Practices (Channel Widening) Examples of rapid process sketches which can inform management needs and developing solutions. Process assessments don t have to be too complicated to be useful.

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