Difference between revisions of "Manage dams for sediment flow"
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<Forecasterlink type="getPressuresForMeasures" code="M15" /> | <Forecasterlink type="getPressuresForMeasures" code="M15" /> | ||
==Cost-efficiency == | ==Cost-efficiency == | ||
| − | Direct sediment transfer cost should be about the same than suction dredging. However, the major cost share is not the suction | + | Direct sediment transfer cost should be about the same than pure suction dredging. However, the major cost share on dredging work is not the suction, but dewatering and deposition of the "surplus" sediment which often makes up 80 % of overall cost. On a global view, also from pure cost perspective sediment flow/transfer is much more efficient than sediment removal, saving 80 % expenditures and landfill in this example. |
==Case studies where this measure has been applied == | ==Case studies where this measure has been applied == | ||
Revision as of 17:56, 19 March 2013
Contents
- 1 Manage dams for sediment flow
- 1.1 General description
- 1.2 Applicability
- 1.3 Expected effect of measure on (including literature citations):
- 1.4 Temporal and spatial response
- 1.5 Pressures that can be addressed by this measure
- 1.6 Cost-efficiency
- 1.7 Case studies where this measure has been applied
- 1.8 Useful references
- 1.9 Other relevant information
Manage dams for sediment flow
Manage dams for sediment flow02. Sediment flow quantity improvement
General description
Applicability
Expected effect of measure on (including literature citations):
- HYMO (general and specified per HYMO element)
- physico � chemical parameters
- Biota (general and specified per Biological quality elements)
Temporal and spatial response
Pressures that can be addressed by this measure
- Reservoir flushing
- Artificial barriers upstream from the site
- Artificial barriers downstream from the site
- Impoundment
- Sedimentation and sediment input
Cost-efficiency
Direct sediment transfer cost should be about the same than pure suction dredging. However, the major cost share on dredging work is not the suction, but dewatering and deposition of the "surplus" sediment which often makes up 80 % of overall cost. On a global view, also from pure cost perspective sediment flow/transfer is much more efficient than sediment removal, saving 80 % expenditures and landfill in this example.
