The Blue Alternative is a water management policy that focuses on small-scale water catchment techniques to address issues like declining groundwater reserves and increasing droughts and floods. It proposes constructing many small catchments to slow rainfall runoff and support wetlands and ponds. This helps regenerate groundwater supplies, prevent floods and droughts, and restore biodiversity. In dry areas, it involves building small mud dams and storage basins to replenish local groundwater aquifers and restore productivity by storing monsoon rains. The goal is conserving rainwater and selling only natural surpluses to ensure environmental security, global stability, and sustained economic growth.
2. By 2025 there will be 3 Billion people
living in waterless regions of the world
- UN
3. climatic extremes flooding long droughts forest fires
drop in groundwater reserves decrease in soil fertility and biodiversity
4. Where did the water go?
• Sea levels are currently rising which impacts human
populations living on islands or in costal regions
• Satellite measured average rise of 3.3mm per year
from 1993 to 2009
5. The Blue Alternative Solution can be used for the following
Issues:
1. Creating and regenerating
groundwater supply resources
2. Flood and drought prevention
3. Restoration of the natural
production potential and
biodiversity of an area
4. To mitigate risk of natural disasters
and rising ocean levels
6. Land Covered With Vegetation
1- absorbs the energy of raindrops
2- slows down water
3- supports macro-organisms
7. The Blue Alternative Water Management Policy
- In areas with available water resources
Revitalization of the existing
landscape
• Construction of many small water
catchments
• The creation of wetlands and ponds to
slow runoff
• Supportive agricultural and forest
management practices
8. The Blue Alternative Solution No trees For Dams
-In dry areas with seasonal rains
• Small mud dams slow
monsoonal rains
• Excess water is stored in
basins or percolation tanks
• To replenish local ground
water aquifers and restore
productivity
• At the lowest possible cost
9. The Blue Alternative in a Dry Area Requires:
Jan - Sept
• Availability of a surplus Oct- Dec
67%
monsoon rain water
• A suitable hydrogeological environment
and locations for building water
catchments
10.
11. Water Retention in Dry Climates
• Check dams
• Contour Bunds
• Recharge trenches
• Percolation tanks
• Planting trees
12.
13.
14. Artificial Recharge Techniques
• Enhance the sustainable yield in areas
• Conservation and storage of excess water for the future
seasons
• Improve the quality of existing groundwater
• Refill aquifers
15. The Blue Alternative Solution can be used for the following
Issues:
1. Creating and regenerating groundwater resources
2. Improve water quality
3. Flood and drought prevention
4. Production Potential and Biodiversity
5. Natural disasters, Rising ocean levels and Iceberg
melting.
6. Atmospheric water vapour layer
18. • the conservation of rainwater on land and the selling of
only the natural surplus of water in a region is essential
for ensuring the environmental security , global stability
and the sustenance of economic growth. Fulfilling these
interests should be of interest to each individual and each
community
Notas del editor
The national water award in 2008 indiaBreakdown of the water cycle causes a rise in climatic extremes, flooding, longer droughts, forest fires, drop in groundwater reserves, decrease in soil fertility and biodiversity.
Douglas (1997)
Improve water qualityThe blue alternative solution can be used in countries with repeated incidence of atural disasters, lack of water resourses, problems growing food, in dry semi arid regions, or completely dry countries. Strengthening of the atmospheric water vapour layer for protection against intense solar radiation
1- absorbs the energy of raindrops and prevents packing of the soil that inhibits infiltration 2- slows down the water giving it more time to absorb into the ground water3- supports organisms that aerate the soil, which allows for easier infiltrationIn areas with available water resources- By creating a network of small dams and water catchments to slow the flow of water.In dry areas with seasonal rains- By creating small mud dams to slow monsoonal rains, and storing excess water in percolation tanks.
Sri lankan king Parakramabahu the Great—"Not even a single raindrop should be allowed to flow into the sea without it first having been used for the benefit of the people..." —is the best summing up of the new water paradigm, a statement which, in the coming decades, should become a slogan for mankind calling for the preservation of civilization.revitalization of the ability of the existing landscape to store and absorb water construction of many small catchments the creation of wetland and ponds to slow runoffto increase the volume of water in natural ecosystems supportive agricultural and forest management practicesincreases the volume of water in natural
Recharge trenches- a trench excavated in the ground and refilled with porous media to harvest surface runoffPercolation tanks -the water stored in the tank with weep holes to allow slow percolation for shallow aquifers Graded bunds-To harvest floodwater wide valleys are reshaped and formed into a series of broad level terraces and floodwater is allowed to run through themCheck dams- small rocks or concrete check dams are constructed across depressions to control flow and allow infiltrationSand damsFlood control reserviors
The blue alternative solution can be used in countries with repeated incidence of atural disasters, lack of water resourses, problems growing food, in dry semi arid regions, or completely dry countries.