OnTrent started out as the ‘Trent Floodplain Initiative‘ back in 1995. A small number of organisations got together to try and arrest the continuing decline in Biodiversity along the Trent and its floodplain by delivery projects and influencing policy. Over the years the partnership developed and expanded to deliver a wide range of projects along the Trent Valley. In 2009 the partnership extended its boundary to include the entire catchment of the River Trent, to work at a catchment scale to enable it work on catchment based initiatives such as the Water Framework Directive.
The Trent Rivers Trust started out in the late 1990's as the Trent Salmon Trust. In 2004 it changed it's name to the Trent Rivers Trust to reflect the wider scope of its work on biodiversity and river management.
In 2013 the Trent Rivers Trust has merged with the OnTrent partnership, combining the strengths of both organisations to form a new Rivers Trust operating across the Trent catchment.