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Hydrological Monitoring
Microwatershed MonitoringSubwatershed Monitoring as part of
overall hydrological network
Lower Gumara
Fogeda River
Enkulal Outlet Station
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Insitutional responsibility
MMP Responsibility of BoWRD since 2009•Counterparts assigned 2009•Counterparts trained 2010•Budget allocated 2011 and idenpendently operational•Operative to some extent – but not providing timely data
Subwatershed Monitoring Programme MoWE HD•Subwatersheds identified, measured, design and procurement plan drawn up in 2009-2010•Capacity weak in HD, little staff TaSBO in 2012•Two basic stations set-up in 2012•TaSBO capable to continue and increase monitoring efforts
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Number of observations and samples in MMP 2009 – 2012
Significant hydrological database (HYDATA) currently housed at BoWRDProposal:
Move the database management to TaSBO in 2013Data is being used for water balance calculations,
further use for precipitation – runoff modeling
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Crest stage resultsStation14 - current meter + float: Q = 7.694 (h - 0.811)^2.338
A
Sta
ge (
met
res)
Flow (cumecs)
0.80
1.0
1.20
1.40
1.60
1.80
2.0
0.0 2.0 4.0 6.0 8.0 10.0 12.0
25-Dec-2012
Station14: CM+Float+Crest Gauge: Q = 6.357 (h-0.821)^2.127
A ?S
tag
e (
me
tre
s)Flow (cumecs)
0.50
1.0
1.50
2.0
2.50
3.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0
26-Dec-2012• Promising preliminary results from MMP stations• More crest stage gauges have been procured through NPCU
Proposal: Suitable river sections to be identified with help of TB WME WRMA in 2013
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Challenges – MMP institutionalisation
• BoWRD capacitated to carry out routine operations, but entering of data and QA not done timely
• Weak capacity for supervision and data analyses• Maintenance failed in 2012 and severely delayed in 2013• Non-willingness to increase payments with increased
workload decrease in data quality and drop-out of stations in 2013.
• Conclusion: Routine operations integrated in BoWRD work, but the work is not carried out efficiently.
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Recommendation and Proposal
• Move MMP routine operations to TaSBO in 2013• Simultaneously transfer one counterpart from
BoWRD to TaSBO • Transfer one pick-up from NPCU to TaSBO until
the procurement for TaSBO has been finalised (1 pick-up for TaSBO, 4 for ABA, 1 for BeSBO, 1 for Lekemt, expected in rainy season 2013)
• Reduction of nr of MMP stations after rainy season 2009-2013 (best operating stations kept).
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= Stations to be closed after 2013 rains
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Two out of five subwatershed stations established in 2012 –
rapid uptake of activities
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Baskura and Enkulal 2012-2013
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Baskura and Enkulal 2012-2013
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Way forward – Subwatershed Stations
Road construction through TBIWRDP canceled Continuation of Baskura and Enkulal?Baskura at a critical location – upstream of Ribb Dam -
short road required only – alternative financing?Zefie outlet - A1 priority station but currently
completely out of reach
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Way forward – Subwatershed StationsThe complete cableway equipments for subwatershed
stations have been procured through NPCU in 2012Equipment procrement for TB hydrometric network is
in progress (15.4.2013) – evaluation of tenders will take place third week May.
Way forward – integrate planning and pool equipment to serve overall TB hydrological
Recommendation: Identify alternative (priority) stations in Tana or Beles watersheds during rainy season – accessible throughout the year
Arrange a training course with the manufacturer in early dry season to build a model SEBA station.