Mvoti to Umzimkulu Classification Study and DWA Corporate Identity Presentation

A detailed presentation and discussion on the proposed management classes regarding the classification study from Mvoti to Umzimkulu, as well as the corporate identity of DWA, presented by Johan Maree. The assessment includes an integrated evaluation, sensitivity analysis, and scenario ranking with a focus on water resource class derivation for each IUA. The study encompasses various nodes along the Mvoti River System and provides insights into the ecological scores and importance of different lengths in the assessment process.

• Classification Study
• Corporate Identity
• Water Resource
• Management Classes
• Integrated Assessment

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1. MVOTI TO UMZIMKULU CLASSIFICATION STUDY DWA CORPORATE IDENTITY Presented by: Johan Maree Deputy Director: Media Production Presentation and Discussion on proposed Management Classes (Item 8.6) PSC 12 December 2012 26 November 2014

2. DWA CORPORATE IDENTITY Presented by: Johan Maree Deputy Director: Media Production Mvoti River System 12 December 2012 Integrated assessment and overall ranking of scenarios. Sensitivity analysis and synthesis of results. Derivation of the Water Resource Class for each IUA.

3. Integrated assessment and overall ranking(Score = weight x rating) of Length scenarios Weights: Normalisation: Scenario Rating: Scenario Score: Nodes River Importance Length Importance Combined (km) Ecological Score : Example for EWR site 2 1 0 3 41 42 43 3 41 42 43 a b c d Weight Normalisation: e f g h 0.9412 1.0000 1.0000 1.0000 1.0000 1.0000 0.9412 0.9412 1.0000 1.0000 0.7837 0.7837 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.78 0.9412 0.9412 0.9412 0.7837 0.7400 i j k l m 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0009 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.65 0.0009 0.0009 0.0009 0.0010 0.2696 0.944 n 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0009 0.0009 0.0010 0.0010 0.0009 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.63 0.0009 0.0009 0.0009 0.0009 0.2660 0.918 o 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0009 0.0009 0.0010 0.0010 0.0009 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.62 0.0009 0.0009 0.0009 0.0009 0.2660 0.914 U40A-03869 U40B-03708 U40B-03740 Mv_I_EWR1 U40B-03832 U40B-03896 U40C-03982 U40D-03867 U40D-03908 U40D-03957 U40E-03967 U40E-03985 U40E-04079 U40E-04082 U40E-04137 U40F-03690 U40F-03694 U40F-03730 U40F-03769 U40F-03790 U40F-03806 U40G-03843 Mv_I_EWR2 U40H-04091 U40H-04117 U40H-04133 U40J-03998 Mv_Est Mvoti Intinda Mvozana Heinespruit Mvozana Mvoti Khamanzi Mvoti Mtize Mvoti Mvoti Mvoti Faye Sikoto Sikoto Potspruit Hlimbitwa Cubhu Hlimbitwa Nseleni Hlimbitwa Hlimbitwa Mvoti Pambela Nsuze Nsuze Mvoti Mvoti_Est 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 667 1.0 1.0 1.0 1.0 54.5 18.7 11.0 27.8 16.7 9.7 40.2 18.6 18.9 27.7 8.4 27.7 21.2 8.0 23.1 17.3 11.0 24.3 13.3 5.9 6.1 42.5 8.3 17.5 2.7 27.9 54.6 1.0 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.65 0.0010 0.0010 0.0010 0.0010 0.3249 0.0965 0.0332 0.0195 0.0492 0.0296 0.0172 0.0712 0.0330 0.0334 0.0491 0.0149 0.0490 0.0376 0.0142 0.0409 0.0306 0.0195 0.0431 0.0235 0.0105 0.0107 0.0753 0.01 0.0310 0.0048 0.0493 0.0967 0.0018 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.65 0.0010 0.0010 0.0010 0.0010 0.3249 0.9412 1.0000 1.0000 1.0000 1.0000 1.0000 0.9412 0.9412 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.00 0.9412 0.9412 0.9412 1.0000 0.8300 0.9412 1.0000 1.0000 1.0000 1.0000 1.0000 0.9412 0.9412 1.0000 1.0000 0.9649 0.9649 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.96 0.9412 0.9412 0.9412 0.9649 0.8188 0.9412 1.0000 1.0000 1.0000 1.0000 1.0000 0.9412 0.9412 1.0000 1.0000 0.9584 0.9584 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.96 0.9412 0.9412 0.9412 0.9584 0.8188 0.0009 0.0010 0.0010 0.0010 0.0010 0.0010 0.0009 0.0009 0.0010 0.0010 0.0008 0.0008 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.51 0.0009 0.0009 0.0009 0.0008 0.2404 0.774 Weights: Scenario Rating: Scenario Score: Node Importance Length Importance Length Combined (km) 1 0 3 41 42 43 3 41 42 43 667 8.3 0.65 0.01 0.65 EWR2 0.78 1.00 0.96 0.96 0.51 0.65 0.63 0.62 27 Biophysical Nodes including 2 EWR sites Scores summed for all nodes for each scenario then applied in integrated calculation with all four variables. 333.3 Ecological Scores:

4. Variable Scores & Weights Scenarios 41 Variables 3 42 43 Ecological Status Ecosystem Services Economic Indicator (GDP) (R Millions) Employment 0.77 0.94 0.92 0.91 1.01 1.00 1.06 1.06 39 637.7 15 808.4 25 713.5 23 996.7 2 1661 6 427 11 360 10 412 Variables Weights 50% Ecology Ecological Status Ecosystem Services Economic Indicator Employment 0.5 0.05 50% Socio-Economic 0.2 0.25

5. Visualisation of Variables Scores

6. Overall Ranking (Two Rank Methods) Scenarios 41 2.50 2 Method 3 42 3.03 1 43 2.06 4 Overall Score (Rank Order method) Rank (1 = best, 4 = worse) 2.40 3 Overall Score (Normalisation Method) Rank (1 = best, 4 = worse) 0.457 4 0.500 3 0.636 1 0.594 2 Rank Order Ranking Method Normalised Ranking Method

7. Sensitivity analysis and synthesis of results Rank Position of Scenario (Normalisation Ranking Method) Weights EcoSystem Services Alternative Ecology GDP Jobs 3 41 42 43 4 4 4 4 4 4 4 3 3 3 3 2 1 1 1 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0.5 0.15 0.15 0.2 0.5 0.1 0.2 0.2 0.5 0.05 0.2 0.25 0.5 0.05 0.15 0.3 0.5 0.05 0.3 0.15 0.5 0.05 0.2 0.25 0.45 0.1 0.2 0.2 0.4 0.05 0.2 0.25 0.35 0.05 0.2 0.25 0.3 0.05 0.2 0.25 0.25 0.25 0.25 0.25 0.25 0.05 0.2 0.25 0.2 0.1 0.4 0.3 0.2 0.05 0.2 0.25 0.15 0.1 0.45 0.3 Rank: 1 = best, 4 = worse.

8. Mvoti River Catchment Scenario Variables Scenarios Ultimate Development Demands & Return Flows (2040) EWR Isithundu Dam Imvutshane Dam MV1 (PD) No No No No MV3 Yes No Yes Yes MV41 MV42 Yes Yes REC total REC low Yes Yes Yes Yes MV43 Yes REC low+ Yes Yes Discussion: Scenario 42 is the best ranked scenarios, Scenario 43 is however close and has the benefit of total flows in January, February and March. It may be possible through operational optimisation to improve on Scenario 43. Comments?

9. Derivation of the Water Resource Class for each IUA Recommended Management Class Criteria Table Prominent Ecological Categories % EC representation at units represented by biophysical nodes in an IUA A/B 0 B 60 0 C 80 70 D 95 90 < D 5 10 A & B C Class I Class II D Either 0 80 20 Class III Or 100 Unit Percentages: Length of river in a given Ecological Category divided by the total river length in an IUA .

10. Resulting IUA Management Classes for all scenarios Scenarios and Management Class Integrated Unit of Analysis PES REC 3 41 42 43 U4-1 U4-2 U4-3 U4-4 II II II III II I I II II II III III II II II III II II II III II II II III

11. Ecological Categories for all Scenarios Ecological Category for Scenarios River Length (km) Nodes River IUA 3 41 42 43 B/C C C C C/D C B/C B/C B B D D B B B C C C C B/C B B D B/C B/C B/C D E B/C C C C C/D C B/C B/C B B C C B B B C C C C B/C B B C B/C B/C B/C C D B/C C C C C/D C B/C B/C B B C C B B B C C C C B/C B B C B/C B/C B/C C D B/C C C C C/D C B/C B/C B B C C B B B C C C C B/C B B C B/C B/C B/C C D U40A-03869 U40B-03708 U40B-03740 Mv_I_EWR1 U40B-03832 U40B-03896 U40C-03982 U40D-03867 U40D-03908 U40D-03957 U40E-03967 U40E-03985 U40E-04079 U40E-04082 U40E-04137 U40F-03690 U40F-03694 U40F-03730 U40F-03769 U40F-03790 U40F-03806 U40G-03843 Mv_I_EWR2 U40H-04091 U40H-04117 U40H-04133 U40J-03998 Mv_Est Mvoti Intinda Mvozana Heinespruit Mvozana Mvoti Khamanzi Mvoti Mtize Mvoti Mvoti Mvoti Faye Sikoto Sikoto Potspruit Hlimbitwa Cubhu Hlimbitwa Nseleni Hlimbitwa Hlimbitwa Mvoti Pambela Nsuze Nsuze Mvoti Mvoti_Est U4-1 U4-1 U4-1 U4-1 U4-1 U4-1 U4-1 U4-1 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-3 U4-3 U4-3 U4-3 U4-3 U4-4 54.5 18.7 11.0 27.8 16.7 9.7 40.2 18.6 18.9 27.7 8.4 27.7 21.2 8.0 23.1 17.3 11.0 24.3 13.3 5.9 6.1 42.5 8.3 17.5 2.7 27.9 54.6

12. Ecological Categories for proposed Scenarios Ecological Category for Scenarios River Length (km) Nodes River IUA 42 B/C C C C C/D C B/C B/C B B C C B B B C C C C B/C B B C B/C B/C B/C C D REC B C C C C/D C B B B B B/C B B B B C C C C B/C B B B B B B B C PES B/C C C C C/D C B/C B/C B B B/C B/C B B B C C C C B/C B B C B/C B/C B/C C D U40A-03869 U40B-03708 U40B-03740 Mv_I_EWR1 U40B-03832 U40B-03896 U40C-03982 U40D-03867 U40D-03908 U40D-03957 U40E-03967 U40E-03985 U40E-04079 U40E-04082 U40E-04137 U40F-03690 U40F-03694 U40F-03730 U40F-03769 U40F-03790 U40F-03806 U40G-03843 Mv_I_EWR2 U40H-04091 U40H-04117 U40H-04133 U40J-03998 Mv_Est Mvoti Intinda Mvozana Heinespruit Mvozana Mvoti Khamanzi Mvoti Mtize Mvoti Mvoti Mvoti Faye Sikoto Sikoto Potspruit Hlimbitwa Cubhu Hlimbitwa Nseleni Hlimbitwa Hlimbitwa Mvoti Pambela Nsuze Nsuze Mvoti Mvoti_Est U4-1 U4-1 U4-1 U4-1 U4-1 U4-1 U4-1 U4-1 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-2 U4-3 U4-3 U4-3 U4-3 U4-3 U4-4 54.5 18.7 11.0 27.8 16.7 9.7 40.2 18.6 18.9 27.7 8.4 27.7 21.2 8.0 23.1 17.3 11.0 24.3 13.3 5.9 6.1 42.5 8.3 17.5 2.7 27.9 54.6 -

13. DWA CORPORATE IDENTITY Presented by: Johan Maree Deputy Director: Media Production uMkhomazi River System 12 December 2012 Integrated assessment and overall ranking of scenarios. Sensitivity analysis and synthesis of results. Derivation of the Water Resource Class for each IUA.

14. Variable Scores & Weights Scenarios 32 Variables 2 21 22 23 31 33 4 41 42 21b 0.76 0.94 0.91 0.91 0.90 0.87 0.87 0.79 0.94 0.91 0.89 Ecological Status Ecosystem Services 0.92 0.98 0.97 0.98 0.95 0.96 0.96 0.93 0.97 0.97 0.98 Economic Indicator (GDP) (R Billions) Employment (x1000) 386.2 348.4 354.1 354.1 351.2 358.4 358.4 357.1 290.2 303.6 348.4 403 343 354 354 352 366 366 347 244 261 343 Variables Weights 50% Ecology Ecological Status Ecosystem Services Economic Indicator Employment 0.5 0.05 50% Socio-Economic 0.2 0.25

15. Visualisation of Variables Scores Ecological Status relative to REC Economic Indicator Ecosystem Services Employment 2 21 41 32 42 22 23 33 22 21b 31 31 4 23 33 32 21b 21 4 2 42 41 1.0 2.0 3.0 1.0 2.0 3.0 1.0 2.0 3.0 1.0 2.0 3.0 1 2 3 4 5 0.5 0.05 0.2 0.25

16. Overall Ranking (Two Rank Methods) Scenarios 31 32 Method 2 21 22 23 33 4 41 42 21b Overall Score (Rank Order method) Rank (1 = best, 10 = worse) 5.50 7.55 7.28 7.48 5.65 6.28 6.23 3.95 5.85 5.70 4.55 9 1 3 2 8 4 5 11 6 7 10 Overall Score (Normalisation Method) Rank (1 = best, 10 = worse) 0.45 0.83 0.77 0.78 0.72 0.68 0.68 0.40 0.54 0.52 0.70 10 1 3 2 4 6 7 11 8 9 5 Rank Order Ranking Method Normalised Ranking Method

17. Sensitivity analysis and synthesis of results Rank Position of Scenario (Normalisation Ranking Method) Weights EcoSyste m Services 0.05 Alternativ e Ecology GDP Jobs 2 21 22 23 31 32 33 4 41 42 21b 1 2 3 4 5 6 7 8 9 10 11 10 10 10 10 10 10 8 8 8 8 8 6 8 1 2 0.50 0.20 0.25 3 4 6 7 11 8 9 5 1 2 0.50 0.15 0.15 0.20 3 5 6 7 10 8 9 4 1 2 0.50 0.10 0.20 0.20 3 5 6 7 11 8 9 4 1 2 0.50 0.05 0.20 0.25 3 4 6 7 11 8 9 5 1 2 0.50 0.05 0.15 0.30 3 4 6 7 11 8 9 5 1 2 0.50 0.05 0.30 0.15 3 4 6 7 11 8 9 5 1 2 0.50 0.05 0.20 0.25 3 4 6 7 11 8 9 5 1 2 0.45 0.10 0.20 0.20 3 5 6 7 11 8 9 4 1 2 0.40 0.05 0.20 0.25 3 4 6 7 11 9 10 5 10 11 12 13 14 15 1 2 0.35 0.05 0.20 0.25 3 4 5 7 11 10 9 6 1 2 0.30 0.05 0.20 0.25 3 4 5 6 9 11 10 7 1 2 0.25 0.25 0.25 0.25 3 7 5 6 11 10 9 4 1 2 0.25 0.05 0.20 0.25 3 6 4 5 9 11 10 7 2 1 0.20 0.10 0.40 0.30 3 8 4 5 9 11 10 7 1 2 0.20 0.05 0.20 0.25 3 6 4 5 9 11 10 7 Rank: 1 = best, 11 = worse.

18. uMkhomazi River - Selection Scenario Variables Scenarios (MK) Ultimate Development (2040) EWR Smithfield Dam Ngwadini OCD 1 2 No Yes No No No Yes No Yes * REC tot (EWR 2) 21 Yes Yes Yes * REC low (EWR 2) 22 Yes Yes Yes * REC low+ (EWR 2) 23 Yes Yes Yes * REC tot (EWR 3) 31 Yes Yes Yes * REC low (EWR 3) 32 Yes Yes Yes * REC low+ (EWR 3) 33 Yes Yes Yes * 4 Yes No Yes Yes (with support) REC tot (EWR 2) REC low (EWR 2) 41 42 Yes Yes Yes Yes Yes (with support) Yes (with support) Alternative wastewater management scenarios need to be evaluated (estuary).

19. Derivation of the Water Resource Class for each IUA Recommended Management Class Criteria Table Prominent Ecological Categories % EC representation at units represented by biophysical nodes in an IUA A/B 0 B 60 0 C 80 70 D 95 90 < D 5 10 A & B C Class I Class II D Either 0 80 20 Class III Or 100 Unit Percentages: Length of river in a given Ecological Category divided by the total river length in an IUA .

20. Resulting IUA Management Classes for all scenarios Scenarios and Management Class Integrated Unit of Analysis PES REC 2 21 22 23 31 32 33 4 41 42 21b U1-1 I I I I I I I I I I I I I U1-2 II II III II II II II II II III II II II U1-3 II I II II II II II II II II II II II U1-4 II II III II III III II II II III II III II U1-5 II I III II II II III III III III II II III

21. Ecological Categories for top ranked scenario Ecological Category: Sc 21 A/B B B B A A C B B A B B/C C C C C B/C C C C B Ecological Category: Sc 21 B B B/C B B C B B B C B B/C B A/B C B C/D B/C C C Nodes River IUA Nodes River IUA U10A-04115 U10A-04202 U10A-04301 U10B-04239 U10B-04251 U10B-04274 U10B-04337 U10B-04343 U10C-04347 U10D-04199 U10D-04222 U10D-04298 U10D-04349 U10D-04434 Mk_I_EWR1 U10F-04528 U10F-04560 U10G-04388 U10G-04405 U10G-04473 U10H-04576 Lotheni Nhlathimbe Lotheni Mkomazi Mkomazi Nhlangeni Mkomazi Mqatsheni Mkhomazana Nzinga Rooidraai Nzinga Mkomazi Mkomazi Mkomazi Mkomazi Luhane Elands U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-1 U1-2 U1-2 U1-2 U1-2 U1-2 U1-2 U1-3 U10H-04576 U10H-04638 U10H-04666 U10H-04675 U10H-04708 U10H-04729 Mk_I_EWR2 U10J-04721 U10J-04807 U10J-04713 U10J-04799 U10J-04820 U10J-04833 U10J-04837 U10K-04838 U10K-04842 U10K-04899 U10K-04946 Mk_I_EWR3 MK_Est Tholeni Mkomazi Ngudwini Mkomazi Ngudwini Mzalanyoni Mkomazi Pateni Mkomazi Mkobeni Mkomazi Lufafa Mkomazi U1-3 U1-3 U1-3 U1-3 U1-3 U1-3 U1-3 U1-3 U1-3 U1-4 U1-4 U1-4 U1-4 U1-4 U1-4 U1-4 U1-4 U1-4 U1-4 U1-5 Mkomazi Nhlavini Xobho Nhlavini Mkomazi Mkomazi_Est Elands Tholeni

22. Ecological Categories for proposed Scenarios (1 of 2) River Length (km) 27.0 25.7 18.9 18.3 Ecological Category Nodes River IUA REC PES 21 U10A-04115 U10A-04202 U10A-04301 U10B-04239 U10B-04251 U10B-04274 U10B-04337 U10B-04343 U10C-04347 U10D-04199 U10D-04222 U10D-04298 U10D-04349 U10D-04434 Mk_I_EWR1 U10F-04528 U10F-04560 U10G-04388 U10G-04405 U10G-04473 Lotheni Nhlathimbe Lotheni Mkomazi Mkomazi Nhlangeni Mkomazi Mqatsheni Mkhomazana Nzinga Rooidraai Nzinga Mkomazi Mkomazi Mkomazi Mkomazi Luhane Elands A/B B B A A B B B B A B B B B C B B/C B C B A/B B B B A A B B B A B B/C B/C B/C C B/C B/C C C C A/B B B B A A C B B A B B/C C C C C B/C C C C 8.3 9.7 28.1 25.1 68.4 19.3 13.0 27.1 17.2 1.4 39.5 20.6 51.7 26.5 12.2 44.5 U1-1 U1-2 Elands

23. Ecological Categories for proposed Scenarios (2 of 2) River Length (km) 15.8 15.8 36.1 Ecological Category Nodes River IUA REC PES 21 U10H-04576 U10H-04638 U10H-04666 U10H-04675 U10H-04708 U10H-04729 Mk_I_EWR2 U10J-04721 U10J-04807 U10J-04713 U10J-04799 U10J-04820 U10J-04833 U10J-04837 U10K-04838 U10K-04842 U10K-04899 U10K-04946 Mk_I_EWR3 MK_Est Tholeni Mkomazi Ngudwini Mkomazi Ngudwini Mzalanyoni Mkomazi Pateni Mkomazi Mkobeni Mkomazi Lufafa Mkomazi B B B B B B B B B B B B B B B B B B/C B B C B B B C C B/C B/C A/B B/C B C/D B/C C C B/C B B C B B B C B B/C B A/B C B C/D B/C C C 5.1 7.5 24.4 25.3 13.8 3.2 24.2 7.9 43.2 1.3 4.0 1.3 26.2 44.3 21.8 103.2 1000.0 U1-3 U1-4 A/B B/C B C/D B/C C B Mkomazi Nhlavini Xobho Nhlavini Mkomazi Mkomazi_Est U1-5

24. DWA CORPORATE IDENTITY Presented by: Johan Maree Deputy Director: Media Production 12 December 2012Thank You