Fishing in Drentsche Aa

Drentsche Aa National Park covers a stream valley system in the province of Drenthe, in the northeastern Netherlands. The park is built around a network of low-gradient, meandering lowland streams — beken — that drain the Drentse Plateau northward.

Unlike most of Drenthe's waterways, which were straightened into drainage channels decades ago, the Drentsche Aa system has kept much of its natural course.

That distinction matters for fishing: the sinuous channels, sandy and gravelly beds, and clean, oxygen-rich water support fish communities that have largely disappeared from comparable Dutch streams.

The main stream, the Drentsche Aa itself, is the backbone of the system. Feeding into it are tributaries including the Deurzerdiep, Anreperdiep, Rolderdiep, Grolloërdiep, and the smaller Zeegserloopje and Anloërdiepje.

These are intimate waters — shallow, often narrow, with the kind of varied current and bottom structure that suits species rarely found elsewhere in the region.

Six characteristic stream fish are present here: bermpje, kleine modderkruiper, serpeling, rivierdonderpad, winde, and rivierprik.

Beyond those indicator species, the broader species list recorded across the system includes blankvoorn, brasem, snoek, baars, aal, zeelt, ruisvoorn, riviergrondel, alver, kolblei, kroeskarper, kopvoorn, winde, and Europese meerval.

Between 1999 and 2014, surveys recorded 28 species in total across the catchment. The winde and serpeling are worth understanding before you fish here.

Both are migratory within the stream system — winde move upstream in schools toward spawning grounds at the end of winter, and serpeling spawn on shallow gravel beds in March and April.

Fish passes have been installed at various points in the province to keep these movements possible. The rivierprik, a lamprey, has similar requirements for unobstructed passage.

To fish here you need a valid VISpas, the national angling licence issued through Sportvisserij Nederland. Night fishing requires a separate NachtVIStoestemming; check current authorizations with the Drenthe waterschap before planning an overnight session.

Boat use on the park's waters is subject to local waterway authority rules — verify with the regional waterschap before launching anything.

This is a park where the fish are the product of restraint — restraint in how the landscape has been managed and how little the streams have been altered. Fish it the same way.