National Water Act, 1998 (Act No. 36 of 1998)NoticesReserve Determination of Water Resources for the Catchments of the Olifants-Doorn in terms of section 16(1) and (2)3. Acronyms and Definitions |
| 3.1 | Acronyms |
BHN |
Basic Human Needs |
EcoSpecs |
Ecological Specifications |
EIS |
Estuarine Importance Score |
EWR |
Ecological Water Requirement |
GRA II |
Groundwater Resource Assessment Phase II |
GRDM |
Groundwater Reserve Determination Methodology |
GRUs |
Groundwater Resource Units |
MAR |
Mean Annual Runoff |
MCM |
Million Cubic Metres |
MAR |
Mean Annual Runoff |
PES |
Present Ecological Status |
REC |
Recommended Ecological Category |
TEC |
Target Ecological Category |
TPCs |
Thresholds of Potential Concern |
| 3.2 | Definitions |
| Baseflow | is a sustained low flow in rivers during dry or fair weather conditions, but not necessarily all contributed by groundwater; includes contribution from delayed interflow and groundwater discharge. |
| EWR | refers to the flow patterns (magnitude, timing and duration) and water quality needed to maintain a riverine ecosystem in a particular condition. |
| Recharge | is the addition of water to the zone of saturation, either by downward percolation of precipitation or surface water and/or the lateral migration of groundwater from adjacent aquifers. |
| Reserve | is the quantity and quality of water required to satisfy the basic human needs by securing a basic water supply and to protect the aquatic ecosystem in order to secure ecologically sustainable development and use of the relevant water resource. |