Difference between revisions of "Improve/Create water storage"

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==General description ==
 
==General description ==
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Water flow and the flow regime can be altered by different factors such as changes in land cover, soil structure and compacting, loss of floodplains and wetlands, and stormwater runoff from urban areas. Loss of water retention combined with accelerated runoff typically increases the frequency and magnitude of flood peaks and reduces the availability of water to streams during low flow (base flow) periods (Saldi-Caromile ''et al''., 2004). Water infiltration and retention can be increased at the catchment scale by e.g. changes in land cover and floodplain restoration (see measure
  
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:* Changes in land use and cover
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http://wiki.reformrivers.eu/index.php/Improve_water_retention#General_description
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:* Improve stormwater management
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:* Reduce and limit the amount of impervious surfaces in the watershed
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The measures to improve water infiltration and retention may be applied in combination with other restoration measures (e.g. water storage, restoring side channels or former meander is firstly done for restore channel morphology and lateral connectivity but also increases infiltration area) at different spatial scale and location (riparian zone, nearby land, etc). Some techniques to improve water retention and infiltration are:
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::• Change land use practices and zoning regulations to limit the allowable percent of impervious surface in the watershed
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::• Decommission roads
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:* Text
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::• Use pervious pavement alternatives where feasible
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:* Text
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:* Minimize the extent and degree of soil compaction
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:* Restore stream connectivity to floodplains (see  [[Remove bank fixation]],  [[Allow/increase lateral channel migration or river mobility]], [[Remeander water courses]], [[Shallow water courses]],  [[Widen water courses]], [[Lower river banks or floodplains to enlarge inundation and flooding]], [[Remove hard engineering structures that impede lateral connectivity]], [[Set back embankments, levees or dikes]] )
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:* Revegetate denuded areas within the watershed. Mean annual flow is increased as a result of greater runoff due to clearing and urbanization (Peterson&  Kwak 1999)
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:* Protect, restore, and create wetlands and other infiltration areas (see [[Construct semi-natural/articificial wetlands or aquatic habitats]], [[Improve backwaters]], [[Reconnect backwaters and wetlands]], [[Restore wetlands]], [[Retain floodwater]] )
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==Applicability ==
 
==Applicability ==

Revision as of 13:19, 21 December 2015

Improve/Create water storage

Category 01. Water flow quantity improvement

General description

Water flow and the flow regime can be altered by different factors such as changes in land cover, soil structure and compacting, loss of floodplains and wetlands, and stormwater runoff from urban areas. Loss of water retention combined with accelerated runoff typically increases the frequency and magnitude of flood peaks and reduces the availability of water to streams during low flow (base flow) periods (Saldi-Caromile et al., 2004). Water infiltration and retention can be increased at the catchment scale by e.g. changes in land cover and floodplain restoration (see measure

http://wiki.reformrivers.eu/index.php/Improve_water_retention#General_description 

The measures to improve water infiltration and retention may be applied in combination with other restoration measures (e.g. water storage, restoring side channels or former meander is firstly done for restore channel morphology and lateral connectivity but also increases infiltration area) at different spatial scale and location (riparian zone, nearby land, etc). Some techniques to improve water retention and infiltration are:
  • Text
  • Text

Applicability

Stormwater management

Stormwater reuse schemes are an effective way to reduce urban runoff volume. However, it is important to harvest only the larger flows than those occurring before the catchment was developed, to ensure that environmental flows are maintained in receiving waterways.

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

Cost-efficiency

Case studies where this measure has been applied

Useful references

Other relevant information

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