Costs of solutions
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One of the goals of the FIThydro project is to determine the financial costs of implementing mitigation measures (solutions).
| Library of possible measures | Min | Max | Unit | ||
|---|---|---|---|---|---|
| [Euro] | [Euro] | ||||
| Habitat | Instream habitat adjustments | Placement of spawning gravel in the river | 10 | 100 | per cubic meter |
| Placement of stones in the river | 50 | 150 | per cubic meter | ||
| Cleaning of substrate - ripping, ploughing and flushing | 1 | 50 | per square meter | ||
| Placement of dead wood and debris | 10 | 150 | per meter | ||
| Re-storing habitat | Removal of weirs | 2,000 | 1,000,000 | per weir | |
| Construction of a 'river-in-the-river' | 50 | 5,000 | per meter | ||
| Construction of off-channel habitats | 1 | 100 | per square meter | ||
| Shore-line habitat | Environmental design of embankments and erosion protection | 10 | 150 | per meter | |
| Restoration of the riparian zone vegetation | 1 | 50 | per square meter | ||
| Fish migration | Downstream | Migration barrier removal | 2,000 | 1,000,000 | per project |
| Operational measures (turbine operations, spillway passage) | NA | ||||
| Sensory, behavioural barriers (electricity, light, sound, air-water curtains) | NA | ||||
| Fish-friendly turbines | 500,000 | per turbine | |||
| Skimming walls (fixed or floating) | 3,000 | per m3/second | |||
| Bypass combined with other solutions | 10,000 | 25,000 | per m3/second | ||
| Fish guidance structures with narrow bar spacing | 2,000 | 40,000 | per m3/second | ||
| Fish guidance structures with wide bar spacing | 2,000 | 40,000 | per m3/second | ||
| Downstream fish protection system using electro shock technique | |||||
| Bottom-type intakes (Coanda screen, Lepine water intake, etc.) | NA | ||||
| Other types of fine screens | |||||
| Vertical slot fishways | |||||
| Upstream | Complete or partial migration barrier removal | 2,000 | 1,000,000 | per project | |
| Nature-like fishways | 5,000 | 20,000 | per vertical meter | ||
| Pool-type fishways | 10,000 | 100,000 | per vertical meter | ||
| Baffle fishways | 5,000 | 100,000 | per vertical meter | ||
| Fishways for eels and lampreys | 600 | per meter length | |||
| Fish lifts, screws, locks, and others | 10,000 | 500,000 | per project | ||
| Truck transport | NA | ||||
| Sediment | Rout-ing | Drawdown reservoir flushing | 1 | 50 | per cubic meter |
| Sediment sluicing | NA | ||||
| Removal | By-passing sediments | NA | |||
| Off-channel reservoir storage | NA | ||||
| Mechanical removal of fine sediments (dredging) | 5 | 10 | per cubic meter | ||
| Minimizing the sediment arrival to the reservoir | 150,000 | per Vortex tube | |||
| Restoration in rivers | Removal of bank protection | NA | |||
| Debris removal | NA | ||||
| Environmental flow | General flow regime | Mitigating reduced annual flow and low flow measures | |||
| Mitigating reduced flood peaks, magnitudes and frequency | |||||
| Short-term flow regime | Mitigating rapid, short-term variations in flow (hydro-peaking operations) | ||||
