First Catchment Management Agency (CMA) to be established Established March 2004 Area extended and name changed

Transcription

1 The IUCMA...

2 Who are We? First Catchment Management Agency (CMA) to be established by the then Minister of DWAF Established under Government Notice No.397 of 26 March 2004 Area extended and name changed to Inkomat- Usuthu Catchment Management Agency under Government Notice No. 330 of 2 May 2014 in Government Gazette No

3 Legislative functions Related to River Operations Inherent functions in terms of Section 80 of the NWA: Investigate and advise interested persons on water resource management Compilation of the CMS Co-ordinate related activities of water users and WMIs Promote community participation in water resource management Additional functions delegated by the Minister on 17 December 2010 Schedule 3 Power to manage, monitor, conserve and protect water resources and to implement catchment management strategies; To make rules to regulate water use; To require establishment of management systems; To require alterations to water works and to temporarily control, limit, or prohibit use of water during periods of water shortage.

4 Legislative functions Related to River Operations Inherent functions in terms of Section 80 of the NWA: Investigate and advise interested persons on water resource management Compilation of the CMS Co-ordinate related activities of water users and WMIs Promote community participation in water resource management Additional functions delegated by the Minister on 17 December 2010: Schedule 3 Power to manage, monitor, conserve and protect water resources and to implement catchment management strategies; To make rules to regulate water use; To require establishment of management systems; To require alterations to water works and to temporarily control, limit, or prohibit use of water during periods of water shortage. Additional functions delegated by the Minister on 15 January 2015: Sec 145(2) Establish early warning system in respect of floods, droughts, water works, risk by a dam, levels of flood, risk posed by water quality and any matter connected to water/water resources the public need to know

5 The Inkomati WMA

6 International InComati Usuthu

7 The Inkomati: A Stressed Catchment? Current Allocated Water Use vs Availability Komati Crocodile Sabie Inkomati WMA Demand Availability Demand > Supply Variability & Seasonality (time and space) Little Storage Rainfall & demand spatially disparate Evaporation > Precipitation Long River International Obligations Ecological flows nb. Equity Closing Basin Semi Arid Run-of River Complex, wicked problem!!

8 Stressed Catchment Complexity (Cilliers, 1998) : Catchments are complex social ecological systems Managing this complexity requires an adaptive, learning-by-doing approach that is informed by practice (Rogers, 2003; Stankey et al, 2005) (Pollard and Du Toit, 2008) Closing River Basins: When the supply of water falls short of commitments for part or all of the year (Molle F, Wester P and Hirsch P, 2009; Falkenmark M and Molden D, 2008) current institutional arrangements are unable to deal with issues of basin closure (Falkenmark M and Molden D, 2008) Semi Arid Run-of-River-Systems: Highly seasonal flow regimes with a marked pattern of low or zero flow No or little in stream storage available (ICMA CMS, 2010) Especially sensitive to degradation in closing river basins This is the Inkomati!

9 Wicked Problem Wicked Problems: Water Resources are complex systems and the management is a Wicked Problem (Rittel & Webber 1973). The problem can be explained/framed in many legitimate ways; Every problem/solution is linked to other problems/ solutions by +ve and/or ve feedbacks; There is no stopping rule for when the problem is solved, nor is there a definitive statement of how effective a solution was So, need to: recognise complexity, deal with uncertainty, deal with variability, Enhance legitimacy, and more.. Thus, IUCMA supports Adaptive Management, Action Research, Stakeholder Participation, Collective Action, Consensus Decision Making and Flexible/Adaptable Operational Water Resources Management and DSS s.

10 Adaptive Operational Water Resources Management

11 Components of Operational Water Resources Management Data collection, archiving, utilisation and dissemination Institutional Arrangements & Governance CMA Water Users Association Dam Operators etc. Social Science Real Time Operational River Management Technical Science Modeling Framework or Decision Support Systems Mike Floodwatch Mike 11 WReMP Stakeholder Interaction and consensus based decision making Operations Committee Website, s, SMS s

12 Modelling DSS

13 Rationale Effective water resource management requires: long term accurate assessment of water availability (Planning) short term transition of water in time and space (water transient, forecasting) reconciliation of demand and supply on a real time basis without compromising the long term sustainability of the catchment it is a complex and multi disciplinary modelling approach, and is mainly modelled independently Need for Integration

14 DSS Framework WReMP Water Allocation, Reservoir Levels, Stochastics, etc. Model Output RUN Model Input Time Series and Parameters MIKE Real Customised Time UI Results Dissemination , sms, Internet Publish Data Import Real Time Data Rainfall, Stream flow, Water Use, Reservoir Levels, etc. Model Output Model Input Time Series and Parameters MIKE 11 NAM, Water Use, Data Assimilation, etc. AUTOCal RUN

15 Status WR Information management system (WRIMS) installed on the IUCMA server and operational Crocodile short term MIKE 11 Real Time model Fully integrated into the new WRIMS platform Thresholds set for all real time gauges to monitor the status of flows and accordingly alerts are flagged when certain thresholds are transgressed The model will be enhanced with the availability of new rainfall data ( merged rainfall values from Radar / Satellite and point rain gauges) RAINWATCH WRIMS Reporting Facilities Desktop Realtime UI setup on the IUCMA server Website the existing website will be upgraded to the latest available technology Every daily are send that shows real time data information of catchment/s SMS alert SMS are send to selected contacts to warn very low flows or high levels/flows of gauge reading depending on thresholds. SMS will also be send to warn of flooding when thresholds are transgressed. Early Warning Flood Forecasting System

16 Monthly Alert Levels X2H016_Crocodile Tenbosch: Daily Average Flow Alert Level Thresholds (m^3/s) Min Max Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept

17 Operations Committee The Crocodile River Operations Committee (CROCOC) was established to coordinate the stakeholder participation. operates under a TOR that acts as the mutually acceptable ethical framework. established itself as the central consultative technical advisory body for operational water resources provides the mechanism for interaction, exchange of operational information and coordination of operational activities and decisions 17

18 Data and Information Needs Implementation of model depends on data availability Near real-time river and reservoir gauging data Rainfall Forecast rainfall Water use (historical, short term demand) Operational data

19 Timeseries in the WRIMS Flow Gauge data Real Time Level Sub hourly Flow Sub hourly Historical data Level sub hourly, daily Flow sub hourly, daily Calculated data Volume daily, weekly, monthly, water year, hydrological year Rainfall data Real Time Rainfall depth sub hourly, daily Historical data Rainfall depth sub hourly, daily Calculated data Rainfall depth daily, weekly, monthly, water year, hydrological year Model Outputs Reservoir data Real Time Percentage Full sub hourly Water Level sub hourly Storage Volume sub hourly Historical data Storage Volume sub hourly, daily Calculated data Dam Volume Change daily, weekly, monthly, water year, hydrological year Shapefiles Hydrological coverages - e.g.catchment coverages,rainfall stations, Reservoir stations, Flow gauges, water bodies, wetlands Administrative coverages Provincial, Local municipalities Infrastructure - canal, roads Landuse and agriculture Communities, farm, Irrigation and Game Reserves Cadastral Grid Coverage Satellite data eleaf statellite data for Inkomati Rainfall Evaporation Biomass Evaporation deficit 19

20 Information Dissemination and Communication

21 Real Time User Interface 21

22 Webportal ) 22

23 Daily Flows 23

24 CROCOC Presentations: A stressed catchment at the start of a Drought? Rainfall Summary: CROCODILE CATCHMENT Annual Rainfall (mm) Monthly Rainfall (mm) Monthly: >>Normal M onthly: >Normal M onthly: <Normal Monthly: << Normal Monthly Min Long Term Max Long Term Average Long Term Min /2014 Monthly /2015 Monthly Cumulative Average 0 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep /2015 Cumulative 2013/ Cumulative

25 100 CROCOC Presentations: A stressed catchment at the start of a Drought? KaapDolton Flow ( ) Max : 3 May Oct 31-Oct 30-Nov 31-Dec 31-Jan 28-Feb 31-Mar 30-Apr 31-May 30-Jun 31-Jul 31-Aug 30-Sep Q (m^3/s) Min