Mole Lower and Rythe Operational Catchment
About
The Lower Mole sub catchment includes the Mole north of Horley to where it meets the Thames at Molesey. It also includes tributaries further down the catchment to the north and west. Characterised as a lowland river, the catchment also includes the Surrey Hills ANOB where the river cuts its way through the North Downs near Box Hill. Although heavily altered in places, there are large areas of the river that are semi natural and flow through beautiful Surrey countryside. The Rythe, which is not actually connected to the Mole, is also included within this operational catchment.
Classifications data for Mole Lower and Rythe Operational Catchment
Number of water bodies
| Water body categories | Natural | Artificial | Heavily modified | Total |
|---|---|---|---|---|
| River, canals and surface water transfers | 5 | 0 | 6 | 11 |
| Lake | 0 | 2 | 1 | 3 |
| Coastal | 0 | 0 | 0 | 0 |
| Estuarine | 0 | 0 | 0 | 0 |
| Groundwater | 0 | 0 | 0 | 0 |
| Total | 5 | 2 | 7 | 14 |
Ecological status for surface waters
| Ecological status or potential | Bad | Poor | Moderate | Good | High | Total |
|---|---|---|---|---|---|---|
| Number of water bodies | 0 | 4 | 9 | 1 | 0 | 14 |
| Number of water body elements | 3 | 14 | 21 | 19 | 70 | 127 |
Chemical status for surface waters
| Chemical status | Fail | Good | Total |
|---|---|---|---|
| Number of water bodies | 14 | 0 | 14 |
| Number of water body elements | 37 | 152 | 189 |
Quantitative status for groundwater
| Quantitative status | Poor | Good | Total |
|---|---|---|---|
| Number of water bodies | 0 | 0 | 0 |
| Number of water body elements | 0 | 0 | 0 |
Chemical status for groundwater
| Chemical status | Poor | Good | Total |
|---|---|---|---|
| Number of water bodies | 0 | 0 | 0 |
| Number of water body elements | 0 | 0 | 0 |
Challenges data for Mole Lower and Rythe Operational Catchment
Reasons for not achieving good status by business sector
The issues preventing waters reaching good status and the sectors identified as contributing to them. The numbers in the table are individual counts of the reasons for not achieving good status with a confidence status of 'confirmed' and 'probable', where the latest classification is less than good status. There may be more than one reason in a single water body. Note, table does not include reasons for deterioration.
| Significant water management issue | Changes to the natural flow and level of water | Invasive non-native species | Physical modifications | Pollution from abandoned mines | Pollution from rural areas | Pollution from towns, cities and transport | Pollution from waste water |
|---|---|---|---|---|---|---|---|
| Agriculture and rural land management | 0 | 0 | 6 | 0 | 14 | 0 | 0 |
| Domestic general public | 0 | 0 | 0 | 0 | 0 | 16 | 0 |
| Industry | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Local & central government | 0 | 0 | 6 | 0 | 0 | 0 | 0 |
| Mining and quarrying | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Navigation | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| No sector responsible | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
| Recreation | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Sector under investigation | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Urban and transport | 0 | 0 | 7 | 0 | 0 | 2 | 1 |
| Waste treatment and disposal | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Water Industry | 0 | 0 | 1 | 0 | 0 | 5 | 18 |
| Total | 0 | 0 | 23 | 0 | 14 | 23 | 19 |
Objectives data for Mole Lower and Rythe Operational Catchment
Ecological status or potential objectives for surface water bodies
Including those with less stringent objectives and extended deadlines
| Status | Bad | Poor | Moderate | Good | High | Total |
|---|---|---|---|---|---|---|
| By 2015 | 0 | 1 | 5 | 1 | 0 | 7 |
| By 2027 | 0 | 0 | 0 | 7 | 0 | 7 |
| Total | 0 | 1 | 5 | 8 | 0 | 14 |
Chemical status objectives for surface water bodies
Including those with less stringent objectives and extended deadlines
| Status | Fail | Good | Total |
|---|---|---|---|
| By 2063 | 0 | 14 | 14 |
| Total | 0 | 14 | 14 |
Quantitative status objectives for groundwater
Including those with less stringent objectives and extended deadlines
| Status | Poor | Good | Total |
|---|---|---|---|
| Total | 0 | 0 | 0 |
Chemical status objectives for groundwater
Including those with less stringent objectives and extended deadlines
| Status | Poor | Good | Total |
|---|---|---|---|
| Total | 0 | 0 | 0 |
Summary Statistics data for Mole Lower and Rythe Operational Catchment
Ecological status and potential
| Summary statistic | Rivers, Canals and SWTs | Lakes | Estuaries | Coastal | Surface Waters Combined |
|---|---|---|---|---|---|
| % of water bodies at good or better ecological status/potential | 0% | 33% | 7% | ||
| % of biological elements, phys-chem elements and specific pollutants at good or better status | 67% | 80% | 68% | ||
| % of water bodies with an objective of good ecological status/potential or better | 55% | 67% | 57% | ||
| % of biological elements, phys-chem elements and Specific Pollutants with an objective of good status or better | 85% | 80% | 85% |
Chemical
| Summary statistic | Rivers, Canals and SWTs | Lakes | Estuaries | Coastal | Surface Waters Combined |
|---|---|---|---|---|---|
| % of water bodies at good chemical status | 0% | 0% | 0% | ||
| % of chemical elements at good status | 82% | 73% | 80% | ||
| % of water bodies at good chemical status without uPBT | 91% | 100% | 93% | ||
| % of chemical elements at good status without uPBT | 99% | 100% | 99% | ||
| % of water bodies with an objective of good chemical status | 100% | 100% | 100% | ||
| % of chemical elements with an objective of good | 100% | 100% | 100% | ||
| % of water bodies with an objective of good chemical status without uPBT | 100% | 100% | 100% | ||
| % of chemical elements with an objective of good without uPBTs | 100% | 100% | 100% |