|Description||The Canal & River Trust, like BW before them use a code to locate unique places on each of the waterways they consider theirs. They call this code a 'functional location'.|
Each code consists of two letters, identifying the waterway, a hyphen, then a three digit code indicating the kilometre along the waterway in which the feature is located, then another hyphen then either a final three digit code indicating the number allocated to the feature within that kilometre (usually sequentially but numbers are not reallocated when features are added or removed, so the sequence cannot be relied on), or the letter P and a further three digits indicating the number of metres from the last kilometre change.
For example, Bridge 2, Grove Road Bridge on the Hertford Union has a functional location of HU-001-007 (or Hertford Union, kilometre 1, feature number 7), the water below it has the functional location HU-001-212 (Hertford Union, kilometre 1, 212 metres from the start of kilometre 1).
Having the functional location of a feature helps people report issues to the navigational authority.
Initially, no feature in canalplan would have the functional location populated, but these could be added by users referencing http://arcg.is/2aimOXr