water accounting

1. INDIAN INSTITUTE OF TECHNOLOGY ROORKEE
Water Accounting Plus (WA+) approach for integrated assessment of
water resources of Godavari river basin, India
July 12, 2022
Presented by:
Praveen Kalura
P.K. Mishra2, Ashish Pandey1, and R.N. Sankuha3
1Department of Water Resources and Development, Indian Institute of Technology Roorkee
2Water Resources Systems Division, National Institute of Hydrology, Roorkee, India
3National Water Development Authority, Ministry of Jal Shakti, India
1ST WATER ACCOUNTING PLUS SYMPOSIUM DELFT

2. 2
Outline
1 Background
2 Data Used
4 Methodology
5 Case study: Godavari river basin, India
6
7
8
Results & Discussion
Conclusions

3. 3
WA + Modelling Framework & Data
ETref
ET
Precipitation
Landuse map
Input
Datasets
{
Budyko Theory:
ET Blue and ET Green separation
  5
.
0
)
exp
1
)(
/
1
tanh( 

 


P
ETgreen
Ø=PET/P
Budyko (1974)

4. 4
WaterPix: Conservation of mass
Precipitation (P)
Evapotranspiration (ET)
Outflow (Q)
Q = P – ET -ΔS
Satellite
measurements
Hydrological Model
Limitations
– Initial soil Moisture
condition
– Human induced runoff
– Spatial dimension
WATERPIX: CONCEPT

5. 5
Purpose of Sheet 2?
To quantify LULC wise water
consumption
To describe the anthropogenic
impact on ET
To understand impact of land use
planning on consumptive use (and
indirectly stream flow)
To relate water consumption to
intended processes (beneficial vs.
non-beneficial ET & agriculture/
environment/ economy/ energy/
leisure)
Sheet 2 (Evapotranspiration)
Input data for Sheet 2?
 Evapotranspiration, ET
 Precipitation, P
 Leaf area index, LAI
 NPP
 GPP NDM
 Land use map

6. 6
PROTECTED LAND USE UTILIZED LAND USE
MODIFIED LAND USE MANAGED WATER USE
WA+ Land use classification

7. 7

8. 8

9. 9

10. 10
Study Area
Length of Godavari River = 1465 km ( 910 Miles)
Area of Godavari Basin = 312,812 km²

11. 11
Rainfall pattern of Godavari basin

12. 12
WA+ Land Use Land Cover
• Data Used
S. No. Data
Spatial
Availability Data Source
resolution
1 NRC-250k 56 m 2013 https://bhuvan-app3.nrsc.gov.in/
2 GlobCover LC v2 300 m 2009
http://due.esrin.esa.int/page_globcover.ph
p
3
IWMI irrigated area
map
250 m 2000
http://waterdata.iwmi.org/applications/irri
_area/
4
MIRCA (Monthly
Irrigated and Rainfed
Crop Areas)
10 km 2000
https://www.uni-
frankfurt.de/45218023/MIRCA
5
Population Density
map (Worldpop)
1 km 2020 https://www.worldpop.org/geodata/
6
WDPA (World
Database on
Protected Areas)
Shapefile 2020 https://www:protectedplanet:net

13. 13
INPUTS FOR WATER ACCOUNTING BASED LAND USE
Globcover

14. 14
S.
No.
ID
LULC
Code
Name
Area
(Km2)
Area
(%)
1 1 PLU1 Protected forest 6202.1 1.87
2 2 PLU2 Protected shrubland 1073.2 0.32
3 4 PLU4 Protected natural waterbodies 206.4 0.06
4 5 PLU5 Protected wetlands 13.7 0.00
5 8 ULU1 Closed deciduous forest 65451.0 19.77
6 10 ULU3 Closed evergreen forest 1659.1 0.50
7 14 ULU7 Shrub land & mesquite 36706.3 11.09
8 16 ULU9 Meadows & open grassland 534.0 0.16
9 18 ULU11 Desert 31.3 0.01
10 24 ULU17 Natural lakes 7604.6 2.30
11 28 ULU21 Waste land 14511.8 4.38
12 29 ULU22 Moorland 200.7 0.06
13 31 ULU24 Mangroves 155.4 0.05
14 35 MLU3 Rainfed crops - cereals 105527 31.88
15 40 MLU8
Rainfed crops - vegetables and
melons
249.7 0.08
16 45 MLU13 Fallow & idle land 19736.0 5.96
17 48 MLU16
Rainfed homesteads and
gardens (rural villages)
966.8 0.29
18 54 MWU3 Irrigated crops - cereals 68745.5 20.77
19 68 WMU17
Irrigated homesteads and
gardens (urban cities)
70.8 0.02
20 69 WMU18
Irrigated homesteads and
gardens (rural villages)
1393.6 0.42

15. 15
Sheet-5
Comparison of Outflow from sheet 5 with observed flow at
Pollavaram site

16. 16
Sheet 1: Resource Base sheet during the year 2011

17. 17
Sheet 2: Evapotranspiration sheet during the
year 2012-2013

18. 18
Temporal variation of ET components
(evaporation, transpiration and interception)

19. 19
Sheet 3 part 1: Agricultural water consumption for the
Godavari basin (2012-2013)

20. 20
Sheet 3 part 2: Land Productivity and Water
Productivity for the Godavari basin (2012-2013)

21. 21
Sheet 3 – Spatial Maps of Crop Yield

22. 22
Sheet 4 part 1: Utilized Flow Manmade for the
Godavari basin (2012-2013).

23. 23
Sheet 4 part 2: Utilized Flow Natural Landuse for the
Godavari basin (2014)

24. 24
Sheet-5

25. 25
Sheet 5: Surface water for the year 2012-2013

26. 26
Sheet 6: Groundwater for the year 2012-2013

27. 27
Total ET
(252.1 BCM)
Gross Inflow
(376 BCM)
Storage change
(30.3 BCM)
Precipitation
Recycling
(5.1 BCM)
Outflow
(Surface water)
(149.1)
Exploitable: 268.9
BCM
Available: 245.8
BCM
Utilized flow: 149.1
BCM
Utilizable flow: 96.7 BCM
Non-utilizable: 0.9 BCM
Committed: 22.1 BCM
Annual Average
Water Balance
(2013-14)

28. 28
Precipitation
Blue
ET
Green
ET
SW
Outflow
Storage
Change
33.4 BCM
2.5 BCM
14.2 BCM
6.5 BCM
15.2 BCM

29. 29

30. 30
Discussion

31. 31
THANK YOU !!

32. 32
Analysis of Sheet 2 (Evapotranspiration)
Non-
manageable
4.5 km3
(6%)
0
20
40
60
80
100
2008-09 2009-10 2010-11
(Wet
year)
2011-12 2012-13 2013-14
(Dry
year)
ET,
T,
E,
and
I
(km3)
Total ET T E I
Beneficial
37.6 km3
(47%)
Non-
beneficial
42.1 km3
(53%)
TOTAL ET
(79.7 km3)

33. 33
Sheet 2 (Evapotranspiration)
Beneficial
37.6 km3
(47%)
Non-
beneficial
42.1 km3
(53%)
TOTAL ET
(79.7 km3)
53.3%
36.5%
6.1%
0.6%
3.5%