Chalk Stream · Chalk · Dorset

River Frome (Dorset)

River Frome (Dorset) terrain map
Terrain map

Dorset's finest chalk stream with a slightly wilder, less manicured feel than Hampshire rivers.

Species

A good day — worth the effort

Low and clear — careful approach country. Small and bright, long leader, careful approach.

75% confidence in this read
Water temperature for sea trout
Ideal
10°C est.ideal 8–15°C
0°14°28°
Why this score · for sea trout
  • Temperature10028% weight
  • Flow6022% weight
  • Clarity8518% weight
  • Feeding Time5513% weight
  • Pressure857% weight
  • Prey Activity5012% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
9.7°C
Estimated
Clarity
Clear
Air temp
9°C
Wind
W 14 km/h
Gentle breeze
Pressure
1009 hPa
Rain · 48h
0.1 mm
No meaningful rain
Rain · ahead
8.7 mm
Light rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

How to fish it · for sea trout
When
From dusk into the first half of the night.
Where
Deeper pools and slower glides · hold water and current seams.
Method
Fish dark patterns on a sink-tip or lightly sunk line, especially near structure.
Kit
10 ft #6/7 rod, floating line with a sink-tip option, 8–10 lb fluoro tippet for the swing.
Why this works
Good conditions. Temperature is favourable (100), Prey activity is weakest (50). ⏰ Sea trout become most active after dark, but this stretch closes at 20:35 — before that window fully opens. Fish hard in the last legal hour: overcast skies and warm evenings can bring fish on early even in fading light.
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
2
2
1
1
2
2
2
2
2
2
Brown SedgeHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Blue Winged OliveHatch
2
3
3
3
3
2
Mayfly (Green Drake)Hatch
2
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Directions
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About this water

Dorset's finest chalk stream with a slightly wilder, less manicured feel than Hampshire rivers. Classic chalk stream character (clear water, weed, prolific hatches) combined with something richer — one of southern England's strongest remaining sea trout populations in the lower reaches. Mayfly is excellent; sedge hatches stronger than most chalk streams, making evening fishing in June–August exceptional. Salmon also run the tidal lower river. The Frome rewards patience on the dry fly for trout, then shifts to nocturnal sea trout fishing at dusk. Less commercial pressure than the Hampshire giants.

  • Chalk
Seasons & zones
  • Trout1 April → 15 October
  • Grayling16 June → 14 March

Salmon: Negligible (2026) — Around 400 salmon returned in 2024 vs a 10-year average of 2,500 — catastrophic decline. Conservation and research river. Not a salmon fishing destination.

Other water nearby · 5
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