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A chalk stream
Clear, spring-fed water with a stable flow through the season.
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2 species listed
Anglers here can target brown trout and grayling.
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1 club or syndicate
Membership water on the River Mimram, some with day tickets alongside.
About the River Mimram
The River Mimram is a chalk stream of about 19 kilometres, or roughly 12 miles, in Hertfordshire. It rises from a spring north west of Whitwell, where watercress beds fed by the same springs have been worked since Roman times, and runs to join the River Lea at Hertford.
The valley above the spring is dry for most of the year, though in very wet years the river has been known to extend several miles upstream. Below Whitwell the river passes Kimpton Mill, where the Kym joins it, then Codicote Bottom, through the middle of Welwyn, between the two Digswell settlements and across Panshanger Park to Hertford.
It is a small river with a reputation for very clear water and good fishing for both brown trout and grayling. Environment Agency surveys have shown wild fish of both species. Like many chalk streams in the area it has suffered from low flows and silt, and silted gravel in places is unsuitable for trout to spawn on, so the wildlife trust is working with farmers and landowners to restore it. The Mimram rewards a quiet approach and a light touch.
Check the details for the stretch you plan to fish.
Where the River Mimram runs
The river's course with every beat and fishery we list on it. Click a marker to read about that water.
River Mimram at a glance
- Length
- 12 miles
- Source
- Spring north west of Whitwell, North Hertfordshire
- Mouth
- River Lea at Hertford
- Tributary of
- River Lea
- Country
- United Kingdom
- Water type
- Chalk stream
Conditions now
Fish species
Anglers on the River Mimram can target brown trout and grayling. Brown trout dominate most chalk stream beats; grayling, sea trout, and salmon appear on certain rivers and seasons.
Fishing Beats on the River Mimram
Browse all 1 beatBrowse day tickets, syndicate rods, and permit fishing on the River Mimram. Each beat listing includes pricing, species, and booking details.
Clubs and syndicates on the River Mimram
1 clubMembership bodies holding water on the River Mimram. Some sell day tickets alongside membership, others are open to members only, and a few run a waiting list.
FAQ
River Mimram FAQs
Common questions about fishing the River Mimram, from day tickets and seasons to what to expect on the bank.
01Can I fish the River Mimram?
02How much does it cost to fish the River Mimram?
03When is the fishing season on the River Mimram?
04What fish can I catch in the River Mimram?
05Do I need a licence to fish the River Mimram?
Worth a read
1 bookable beat
On the River Mimram
