the river exe

• What is the length of the River Exe?

  82.7 km
• What is the area of the upper catchment of the River Exe?

  601 km²
• What is the maximum elevation of the River Exe?

  514 m
• What is the lowest elevation of the River Exe?

  26 m
• What percentage of the catchment of the River Exe is underlain by impermeable rocks?

  84.4%
• What type of rocks predominantly underlie the River Exe?

  Devonian sandstones
• What is the land-use percentage of agricultural grassland around the River Exe Basin?

  67%
• What percentage of the River Exe Basin is urban land?

  0.6%
• What is the total precipitation for the River Exe?

  1295 mm
• What is the runoff value in the water balance for the River Exe?

  844 mm
• What percentage of the water balance does runoff account for in the River Exe?

  65%
• What are the two projects that affected the water cycle and balance of the River Exe?

  Wimbleball Reservoir and Peatland Restoration
• When was the Wimbleball Reservoir constructed?

  1979
• What are the benefits of the water cycle in the River Exe case study?

  • Improved water quality
  • Reduced pollutants entering water
  • Lower costs for water treatment
• What is the purpose of Upstream Thinking in the River Exe project?

  • Management of catchment
  • Collaboration with local stakeholders
  • Promotion of sustainable water management
• How has the Upstream Thinking project changed farming practices?

  • Improved gutters, fencing, drainage
  • 60% less dirty water from farms
  • 90% reduction in bacteria reaching river
• What is the purpose of dipwells in the River Exe study?

  To monitor water table changes
• What was the effect of the hot dry summer of 2003 on the water table?

  Water table dropped to 431.3
• What was the impact of ditch repairs in 2007 on the water table?

  Beneficial effect on water table
• What do monitoring results indicate about water tables in the River Exe area?

  Water tables have started to rise
• What are the economic impacts of the River Exe project?

  Cheaper water cleaning processes
• What are the social impacts of the River Exe project?

  Cheaper water costs and less pollution
• What are the environmental impacts of the River Exe project?

  Less pollution in the water
• What are the seven actions of the Exmoor Mires Project?

  1. Increases water storage in upper catchments
  2. Returns ground to natural saturated conditions
  3. Retains carbon within peat
  4. Improves grazing and water supply
  5. Enhances water quality
  6. Provides educational and recreational opportunities
  7. Increases lag time and lowers flood risk
• What is the impact of the Exmoor Mires Project on CO2 storage?

  1 million tonnes could be released
• What progress has been made in the Exmoor Mires Project by 2015?

  1000 ha of peat moorland restored
• How much has the water table risen due to the Exmoor Mires Project?

  2.65 cm
• What are the effects of drainage ditches on water quality in the River Exe?

  • Increased speed of water flow
  • Reduced water quality
  • More silt carried downstream