View of the Oker Reservoir – Oker Dam loop from Bergstadt Altenau

Hiking trails & Routes

View of the Oker Reservoir – Oker Dam loop from Bergstadt Altenau

Hard

4.3

(268)

891

hikers

View of the Oker Reservoir – Oker Dam loop from Bergstadt Altenau

05:20

19.6km

290m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 21, 2026

Waypoints

Start point

Bus stop

Get Directions

1.25 km

Bridge over the Oker

Highlight • Bridge

The Oker is perfect for a leisurely evening stroll. You will regularly find benches to rest and enjoy on the way.

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3.39 km

View of the Oker Reservoir

Highlight • Viewpoint

The Okertalsperre is a dam in the Harz Mountains and is located at an altitude of 416 meters. It dams the river Oker, which is also the namesake of the dam.

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3.43 km

View of the Dam and Reservoir in the Harz Mountains

Highlight • Viewpoint

Always a worthwhile destination

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4.72 km

View of Restaurant Der Windbeutelkönig

Highlight • Viewpoint

Good asphalt path

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10.7 km

Bench with a view of the Okertalsperre and historical information board

Highlight • Viewpoint

The dam is 260 meters long and up to 75 meters high. The pent-up water drives the turbine of the Romkerhalle hydropower plant. It was built from 1955 to 1956.

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11.7 km

Oker Dam

Highlight • Monument

The Okertalsperre was built as a curved weight wall. It is likely to be the only sheet metal wall in Germany. The dam is 260 m long and 75 m …

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13.3 km

Oker Reservoir

Highlight • Lake

From here you have a magnificent view over the dam.

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18.1 km

Squirrel Fountain

Highlight • Natural Monument

No water flows here anymore.

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19.6 km

End point

Bus stop

Way Types & Surfaces

Way Types

16.8 km

1.48 km

773 m

429 m

111 m

< 100 m

Surfaces

9.50 km

6.69 km

2.93 km

350 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Friday 9 October

12°C

6°C

-- %

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Comments

December 31, 2021,Um die Talsperre zum Windbeutelkönig 🌲 🌬️ 🌊 🧁

At the end of the year we had decided to go for the cream puff king, it still has to be the schnitzel king. We and the booty deserved it with a hike around the Altenau arm of the Okertalsperre. Great trail, apart from the section on the B 498, but that's just part of the trip if you want …

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September 7, 2022,Okertalsperre Runde vom Campingplatz

A great hike, easy to walk with normal shoes. No necessary knowledge required

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August 23, 2022,Wanderung um den Okerstausee

Finally on the road again after sciatica and Corona. The vertical meters are not particularly high for a hike in the Harz Mountains, but I didn't want to overexert myself after the break, but it was nice and hot 😊😊

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June 19, 2022,Wanderung Okertalsperre

Can be done, does not have to be. Completely only on asphalt. Ran. It's more of a bike ride

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July 28, 2022,Okertalsperre

Unfortunately mostly paved and partly on the main road.

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April 5, 2025,🥾 Okertalsperre / Okertalstausee

A beautiful loop around the reservoir. It would be even more beautiful if there weren't so much dead wood everywhere :(
The bark beetle has wreaked such havoc in the Upper Harz that I no longer recognize the forests I've known since childhood.

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June 11, 2023,NP Harz: Okertalsperre

Circular route around the Oker reservoir with its side arms. In addition to the river Oker, several other tributaries feed the reservoir.
During construction, the Unterschulenberg forest workers' settlement had to be abandoned and rebuilt on the Wiesenberg. In years with little rain, the water level of the dam can drop so much that the remains of individual foundation walls …

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February 22, 2025,Rundtour um die Okertalsperre vom Parkplatz 🅿️ für Camper 🚐 in Schulenberg

The Oker Dam is a dam near Altenau in the Harz Mountains in the Goslar district of Lower Saxony. Its reservoir, through which the Oker flows, also known as the Oker Reservoir, has a water surface of 2.25 square kilometers at the reservoir level and a storage capacity of 46.85 million cubic meters of water. The dam wall is 260 …

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