Across
- 2. The belt or zone along the shore usually with a gentle slope toward the water occupied by unconsolidated material moving sand or shore drift.
- 5. Inundation caused by excessive storm runoff.
- 7. A conduit for the carriage of storm water or sewage or other used waters.
- 9. Place of meeting of two streams.
- 12. A hydraulic device which creates a negative pressure by forcing liquid through a restriction thus increasing the velocity head.
- 14. An artificial watercourse for navigation or irrigation.
- 15. An extended period of dry weather or of deficient rainfall.
- 17. The removal of soluble matter from solids by washing and decantation.
- 18. An impervious cover (for example of concrete ) at the top of a dam sea wall etc to prevent turbulent erosion and/or hydrostatic uplift pressure.
Down
- 1. Large masses of microscopic and macroscopic plant life such as green algae occurring in bodies of water.
- 3. The loss of water as vapour from a body of surface water or from the soil.
- 4. A conduit carrying liquid under gravity usually open at the top.
- 6. Sinking a borehole by means of a rotary or percussion drill.
- 8. The planting of trees commonly for the prevention of soil erosion in catchment areas.
- 10. An artificial mound or bank for confining a watercourse etc within bounds.
- 11. The flow of a liquid in a direction reverse of that intended.
- 13. A structure usually of earth masonry or concrete to prevent impound or control the flow of a watercourse for navigation water supply hydroelectric power flood control etc.
- 16. An access in a sewer provided for the purpose of permitting a man to enter or leave the sewer.