Current status of the river

The Friends of the Mimram

The Friends of the Mimram website has links to measurements from the Environment Agency including

       the current flow levels

       Monthly and historical rainfall levels

       Monthly and historical groundwater levels


Riverfly Monitoring

Every month, local volunteers conduct Riverfly Monitoring at 17 sites along the Mimram. Their sampling technique involves a 3-minute kick sample of the river bed, and identification and counting of the aquatic invertebrates caught.  This gives a good indication of water quality and can alert authorities to any recent pollution incidents.   To find out more about Riverfly monitoring, or to get involved, please click here.


Affinity Water monitoring programme

To provide a benchmark to demonstrate the environmental effectiveness of reducing water abstraction from Fulling Mill and Digswell, Affinity Water have developed a monitoring programme. This includes:

    a Machrophyte survey

    monthly river flow measurements 

Design by LTD Design Consultants and build by Garganey Consulting.