Subwatershed Outlet (B1 project area) Hydrological Monitoring
Institutional strengthening
The newly established Tana Basin Organisation have been trained and
equipped to carry out the monitoring programme. The institution will be crucial in future water resource management of
the Tana Lake.
Subwatershed stationsTwo stations establisehd in 2012 – Baskura and Enkulal
Note width of channel and height of peak flood –
cableway required
Parameters recorded in 2012: Rainfall, Secchi turbidity, Stage level and >250 sediment concentration samples collected by November 2012
Subwatershed stations
Subwatershed stations
June July August September
Secchi Baskura 5.3 7.6
Secchi Enkulal 0.9 0.4 2.5 3.7
Rain Baskura 451 122
Rain Enkulal 273 484 400 345
Road Construction – Status
1. Baskura: Monitoring started June 2012, Road design completed, 3.5 km PRIORITY!
2. Enkulal: Monitoring started June 2012, Road design completed, 4.5 km PRIORITY!
3. Jema: Road design completed, construction started by Woreda – reconsider need for hydrological station!
Jema Outlet
Wide river Unstable banks
Frequent overflow
Not suitable site for hydrological station
Alternative site further downstream
Road Construction – Status
1. Baskura: Monitoring started June 2012, Road design completed, 3.5 km PRIORITY!
2. Enkulal: Monitoring started June 2012, Road design completed, 4.5 km PRIORITY!
3. Jema: Road design completed, construction started by Woreda – reconsider need for hydrological station!
4. Zefie: Federal Road construction plan, additionally 1.6 km required. Part of A1 hydrological network recommendation PRIORITY!
5. Kentay: BDU/Ghent established station in 2012 – data sharing. Long road (8.1 km) would be required, not priority.
LOCATION OF SUBWATERSHED OUTLETS AND IDENTIFIED SITES
Equipment procured
1 Saba double drum winch 5
2 Connection cable price 5m Long
3 Track cable 200m 1
4 Track cable 3000m 6mm
5 Crane 1
6 Drawing winch single 1
7 Single counter C Accessories 6
8 Suspended Sediment Sampler cable 2
9 Suspended Sediment Sampler cable 3
10 Tripod Single
11 Drawing Over 1
12 Crane trolley 5
13 Roller Protection 5
14 Track cable fixing 5
15 Cable Pulley for Suspension 5
16 Track cable 5
17 Accessories for cable 1
18 Personal computer for field 2
Way Forward
• Installation of staff gauges at Zefie Outlet (Feb 2012)• Dialogue with BDU on Kentay outlet (site established in
2012 – data sharing to be ensured)• Dialogue with B1 component on road constrution at Jema
Outet – considering relocating station to more suitable location
• Installation of cableways when possible (extension phase)