Post on 21-Jun-2015
transcript
Optimizing Road Development for Groundwater Recharge and Retention
Some Solutions from Tigray, Ethiopia
Plate1. Deep trenches at downstream side of roads
Plate 2a. Road side ponds to recharge groundwater and enhance in-situ moisture in soils
Plate 2b. Road side ponds to recharge groundwater and enhance in-situ moisture in soils
Plate 2c. Road side ponds to recharge groundwater and enhance in-situ moisture in soils
Plate 3. Road side runoff diverted into ponds
June 2014
Sept 2014
Plate 4a. Water from a culvert is channeled into farmlands with over 300m long trench
Culvert
June 2014
Sept 2014
Culvert
Plate 4b. Water from a culvert is channeled into farmlands with over 300m long trench
Plate 5. Water from a culvert is channeled into farmlands
June 2014
Sept 2014
Plate 6. Road side runoff is channeled into farmlands (as spate)
Deep trenches
Culverts
Borrow pit
Plate 7. Upstream trenches, and then water from culvert channeled into a borrow pit.
Plate 8. Borrow pit shown in plate 7
Plate 9. Panoramic view of channels to divert water from culverts into a borrow pit shown in Plate 8.
Culvert
Borrow pit
Plate 10. A pond used to store water from road side and a culvert
Plate 11. Water from a culvert which used to cause gully erosion is now channeled and spread into farmlands
Plate 12. Road side runoff is diverted and spread into farm lands through series of chennels
Plate 13. Similar to Plate 12 but different site