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Brook Lake

A stream near Lee Mill, Devon. No gauge of its own: what the river map and the banked data say about it.

Brook Lake is a stream on Ordnance Survey’s river map near Lee Mill, Devon, with about 1.6 km of mapped channel. On the map it flows into the River Yealm and out to the sea.

Next gauge downstream

PUSLINCH on the Clam (River Yealm), about 5.0 km along the river below where Brook Lake ends on the map.

0.43 m3/s Easing 45 min ago

After that, Puslinch, about 5.0 km along the river.

No gauge measures Brook Lake itself. A gauge downstream shows water that has already passed it, mixed with everything else that has joined on the way, so it says nothing exact about this stream.

Water-sampling points on Brook Lake

1 Environment Agency sampling point is placed on this stream. These are dated samples taken by hand, not live readings, and FloodRadar does not grade them.

Brook Lake at Swainstone Cross - Brook Lake
Last sampled 18 Dec 2024 · 21 months ago · 15 samples banked

A sample is taken on a date; it says nothing about the water today. A sample below an overflow does not by itself show where anything in it came from.

Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.

On the map

The map needs JavaScript. Everything it shows is listed on this page.

The blue line is Brook Lake; grey lines are other mapped watercourses. Lines from OS Open Rivers (edition 2026-04).

The River Yealm, the river it joins →PL7 5BA, a postcode page near where it ends on the map (about 200 m away) →All rivers with gauges →

What this page can and cannot tell you

Its line, its name and where it flows come from Ordnance Survey’s river map (OS Open Rivers, edition 2026-04), which leaves out many small streams, ditches and culverts. “Flows into” is the map’s word: a channel that is not on the map is not shown here, which does not mean it is not there.
No gauge measures Brook Lake itself, so its own level is not known here.
No storm overflow is placed on this stream on the river map. That is not the same as none: the map cannot place every overflow.
Water samples are England’s only (the Environment Agency’s archive), placed where the map can place their sampling point.
Nothing on this page says whether any place floods. For an address, see its postcode page.

This uses Environment Agency flood and river level data from the real-time data API (Beta). Licence: Open Government Licence v3.0.