May Harena
May Harena | |
---|---|
Dogu’a Tembien | |
Physical characteristics | |
Source | |
• location | Valley head east of Hagere Selam |
• elevation | 2,480 m (8,140 ft) |
Mouth | May Zegzeg River |
• location | May Addi Abagiè at the border of Mika'el Abiy and Haddinnet municipalities |
• coordinates | 13°38′38″N 39°11′38″E / 13.644°N 39.194°E |
• elevation | 2,270 m (7,450 ft) |
Length | 2.1 km (1.3 mi) |
Width | |
• average | 10 m (33 ft) |
Basin features | |
River system | Seasonal river |
Landmarks | Hagere Selam town |
Topography | Mountains and deep gorges |
The May Harena is a river of the
Characteristics
The May Harena is a confined ephemeral river with an average slope gradient of 100 metres per kilometre.[2]
Hydrology
River discharge in May Harena is highly seasonal, with the river only carrying water in the rainy season, after rain events. The problem is exacerbated by the fact that most of the urban drainage from Hagere Selam is rapidly directed to this river. Conservation activities (such as those by the Selam WatSani project aim at buffering these floods. There is however a strong contrast with better regularised adjacent May Sho'ate River.
Flash floods and flood buffering
Runoff mostly happens in the form of high runoff discharge events that occur in a very short period (called
Boulders and pebbles in the river bed
Boulders and pebbles encountered in the river bed can originate from any location higher up in the catchment. In the uppermost stretches of the river, only rock fragments of the upper lithological units will be present in the river bed, whereas more downstream one may find a more comprehensive mix of all lithologies crossed by the river. From upstream to downstream, the following lithological units occur in the catchment.[8]
Trekking along the river
Trekking routes have been established across and along this river.[9] The tracks are not marked on the ground but can be followed using downloaded .GPX files.[10] Trek 12 V runs parallel to the river, on its northern side.
See also
- List of Ethiopian rivers
References
- ISBN 978-3-030-04954-6.
- ^ ISBN 978-3-030-04954-6.
- hdl:1854/LU-378900.
- hdl:1854/LU-378900.
- .
- .
- hdl:1854/LU-8518957.
- ISBN 978-3-030-04954-6.
- ISBN 978-3-030-04954-6.
- ^ Public GPS traces tagged with nyssen-jacob-frankl | OpenStreetMap