An overview presentation of the ways to manage water on land to prevent erosion, direct water, and to capture and store water in the cheapest storage there is--right in the ground!

2. Passive Water
Harvesting

3. Protect Surface Water
Improve Soil Fertility
Prevent Flooding &
Overloading of
Infrastructure

4. Essential Properties of Water
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5. Essential Properties of Water
●
Water flows at right angles to contour

6. Essential Properties of Water
●
Water flows at right angles to contour
Faster flow = greater capacity to carry
pollutants & sediments and more power
to cause erosion
●

7. Essential Properties of Water
●
Water flows at right angles to contour
Faster flow = greater capacity to carry
pollutants & sediments and more power
to cause erosion
●
It is much easier to manage small
volumes of slow moving water than it is
to manage large volumes of fast
moving water
●

8. Hydrology
&
Watersheds

11. source: LA DEQ

13. “The BioSand Filter uses
both physical and
biological mechanisms to
remove the following
contaminants: more than
96% of fecal coliforms,
100% of protozoa and
helminthes; 50-90% of
organic and inorganic
toxicants; more than 75%
of iron and manganese;
and suspended sediments.”
- UN FAO

15. Earthworks!

16. Berms

20. Basins

23. Swales

26. Bioswales

27. French Drains

28. Check Dams

30. Terraces

32. Gabions

34. Greywater Systems

35. Greywater Systems
> Greywater is wastewater that does not
include sewage

36. Greywater Rules
1. Never let greywater collect on the surface

37. Greywater Rules
1. Never let greywater collect on the surface
2. Never pour bleach, drain cleaner, or any
other toxic material down any drain
connected to a greywater system

38. Greywater Rules
1. Never let greywater collect on the surface
2. Never pour bleach, drain cleaner, or any
other toxic material down any drain
connected to a greywater system
3. Always protect surface water

39. A Simple, Expandable
Greywater System
Branched Drain System

40. Branched Drains
'Y' fittings
Deep mulch
filled basins
House
Black pipe