River Hart

River Hart
Just upstream of treated wastewater outfall of Hartley Wintney sewage treatment works
Mouth of the Hart (into the Whitewater)
EtymologyA hart a deer
Location
CountryEngland
CountiesHampshire
Districts / BoroughsHart
Physical characteristics
Source 
  locationCrondall, Hampshire, United Kingdom
  coordinates51°14′07″N 0°51′33″W / 51.23524°N 0.85920°W / 51.23524; -0.85920
  elevation85 metres (279 ft)
MouthRiver Whitewater
  location
Hart, Hampshire
  coordinates
51°20′32″N 0°56′13″W / 51.34224°N 0.93683°W / 51.34224; -0.93683
  elevation
46 metres (151 ft)
Basin features
ProgressionHart, Whitewater, Blackwater, Loddon, Thames
Tributaries 
  rightFleet Brook

The River Hart is a tributary of the River Whitewater in north Hampshire, England. It rises at Ashley Head spring in Crondall and flows north to meet the Whitewater at Bramshill.

The Hart district of Hampshire is named after the river.