Hydrological Monitoring

Microwatershed MonitoringSubwatershed Monitoring as part of

overall hydrological network

Lower Gumara

Fogeda River

Enkulal Outlet Station

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

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

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

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.

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).

= Stations to be closed after 2013 rains

Two out of five subwatershed stations established in 2012 –

rapid uptake of activities

Baskura and Enkulal 2012-2013

Baskura and Enkulal 2012-2013

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

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.