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PROJECT PROPOSAL FOR PDS UNDER HYDROLOGY PROJECT PHASE-II
STUDY OF RESERVOIR SEDIMENTATION IMPACTSTUDY OF RESERVOIR SEDIMENTATION, IMPACT ASSESSMENT AND DEVELOPMENT OF CATCHMENT AREA
TREATMENT PLAN FOR KODAR RESERVOIR IN CHHATTISGARH STATECHHATTISGARH STATE
SUBMITTED TOHP-II CELL
CENTRAL WATER COMMISSION, NEW DELHI
BY
WATER RESOURCES DEPARTMENTWATER RESOURCES DEPARTMENT, GOVT. OF CHHATTISGARH, RAIPUR
NATIONAL INSTITUTE OF HYDROLOGY REGIONAL CENTRE, SAGAR (M.P.)
C G G C SPARTICIPATING AGENCIES
PROJECT LEADER
Water Resources Department, Govt. of Chhattisgarh, Raipur
PROJECT LEADER
Govt. of Chhattisgarh, Raipur
PROJECT PARTNER
National Institute of Hydrology, Regional Centre, Sagar (M. P.)
PROJECT DURATION : 3 YEARPROJECT DURATION : 3 YEAR
TOTAL BUDGET ESTIMATE : Rs. 34.33 Lakh
WRD, Govt. of Chhattisgarh, Raipur : Rs. 22.26 Lakh g pNIH, RC, Sagar : Rs. 12.07 Lakh
NEED OF SCIENTIFIC STUDY ON RESERVOIR SEDIMENTATIONSEDIMENTATION
Soil & water are two important natural resources.Nature takes 200 to 400 years to build up 1 cm of topsoil.About 12,000 M tones of soil lost every year by water action.Reduced capacities affect reservoir operation and irrigation efficiencies.Priority areas for conservation measures can be fixed on the basis ofsoil loss assessment.Cropping pattern can be modified and yield can be increased.The results of the sediment modeling can be implemented on otherreservoirs and designing of new projects.Conservation measures suggested will reduce the incoming sedimentin to reservoir and increase the life of the reservoir and projectin to reservoir and increase the life of the reservoir and project.Dissemination of knowledge and findings will be able to develop theawareness in farmers and other departments for soil conservationmeasures.easu es
OBJECTIVES OF THE STUDY
1 Assessment of present status of reservoir storage by estimating revised1. Assessment of present status of reservoir storage by estimating revised
capacity using remote sensing approach.
2. Sediment modeling.
3. Assessment of soil loss from catchment area.
4. Prioritization of catchment area based on geomorphological characteristics,
sediment yield and risk of erosion and soil loss from sub-catchments.
5. Detection of change in land use and other environmental parameters
responsible for sedimentation in reservoirresponsible for sedimentation in reservoir.
6. Development of management plan for catchment area with area specific soil
conservation measures for minimizing sedimentation in reservoir.
STUDY AREASTUDY AREA
Kodar reservoir is situated on river Kodar which is a tributary of Mahanadi.Location : Tahsil : Mahasamund (Raipur)Location : Tahsil : Mahasamund (Raipur)
Latitude : 21-11’50” N & Longitude : 82-10’-40”E Year of start of operation : 1976-77Dead Storage Level : 286.04 mFull Reservoir Level : 295 24 mFull Reservoir Level : 295.24 mGross Storage Capacity : 160.35 MCMDead Storage Capacity : 11.33 MCM No. of villages served : 49Head works consist ofHead works consist of
Earthen dam : 3.26 km longTop width of dam : 4.577 m Waste weir : 183 m longLeft Bank Canal (LBC) : Length is 23 30 km & CCA is 16066 haLeft Bank Canal (LBC) : Length is 23.30 km & CCA is 16066 ha. Right Bank Canal (RBC) : Length is 10.60 km & CCA is 7406 ha.Length of distributaries : 67.75 kmLength of minors : 278 km
Total culturable area : 53679 acres (21740 ha )Total culturable area : 53679 acres (21740 ha.)L.B.C . : 36436 acres R.B.C. : 17243 acres
DRAINAGE MAP UP TO KODAR RESERVOIRDRAINAGE MAP UP TO KODAR RESERVOIR
Catchment area : 317.17 sq. km.
Mean rainfall : 1433.1 mm
T h Hill & tTopography : Hilly & steep
Water spread (FRL) : 8850 acres
LAND USE MAP
Main land uses are :• Forest : on ridges• Agriculture : on plainsg cu tu e o p a s• Waste land• Built up• Water bodies
SOIL TYPES IN CATCHMENT OF KODAR RESERVOIR
Soil is mainly fine loamySusceptible toSusceptible to excessive erosion
1. Preparation of inventory on hydrology, meteorology, geology, landuse soil reservoir elevations and other details
METHODOLOGY
use, soil, reservoir elevations and other details.Collection and analysis of rainfall, reservoir details, levels, land usepattern, drainage etc.Contours, geology, geomorphology & hydrogeomorphology.Soil type soil depth infiltration rate hydraulic conductivity etcSoil type, soil depth, infiltration rate, hydraulic conductivity etc.Procurement of remote sensing data on the basis of reservoirlevels.
2. Instrumentation and collection of hydrological and sediment datain different inflowing tributaries.in different inflowing tributaries.
Upgrading of gauge-discharge and sediment sampling sites.Regular collection and monitoring of sediment samples.
3. Preparation of thematic maps on drainage, soil type, land use,contours, villages, road network, geology in GIS environment.contours, villages, road network, geology in GIS environment.
Preparation of base map of Kodar reservoir includes river networkand reservoir.Generation of thematic maps of catchment area, contour, soils,land use, geology, road and rail network, villages etc. and, g gy, , gdevelopment of Digital Elevation Model in GIS environment.
4. Estimation of revised reservoir capacity using remote sensingtechnique
METHODOLOGY
technique.Determination of revised water spread areas at different elevations bydigital image analysis of remote sensing data.Estimation of revised capacity and computation of losses at differentlevelslevels
5. Application of sediment prediction model.Analysis of hydro-meteorological, discharge and sediment samples.Application of suitable sediment yield model.
6 Prioritization of catchment area based on soil loss using6. Prioritization of catchment area based on soil loss usinggeomorphological characteristics, Universal Soil Loss Equation(USLE) and sediment yield.
Determination of present land uses in the catchment area fromremote sensing data and estimation of soil loss from various sub-gcatchments using USLE modelDetermination geomorphological characteristics of sub-catchments.Determination of sediment yield using suitable model from sub-catchments.Prioritize the sub catchments considering the present state of stressand environmental degradation.
7. Impact assessment analysis on sedimentation and runoff due todegradation in the catchment
METHODOLOGY
degradation in the catchment.Suggestion for suitable measures of soil conservation in thecatchment area.Analysis of impact of suggested measures on sediment.
8. Preparation of catchment area treatment plan.Development of management plan for the catchment area consistingof priority areas, extent of erosion, suitable conservation measuresand their effect on erosion from the catchment and catchment areatreatment plan.
WORK PLANWORK PLAN
Water Resources Department, Govt. of Chhattisgarh,
• Hydrological and hydro-meteorological data collection and preparation of
Water Resources Department, Govt. of Chhattisgarh, Raipur
inventory.• Upgradation of gauging and sediment sampling sites.• Monitoring of hydrological and hydro-meteorological data.
P i d l i f h d l i l d h d t l i l d t i• Processing and analysis of hydrological and hydro-meteorological data using statistical methods, SWDES and HYMOS.
• Generation of various thematic maps using GIS.• Evaluation of soil properties.Evaluation of soil properties.• Development of catchment area treatment plan.• Interim report preparation (yearly) and final report submission. • Dissemination of knowledge, findings and application of the management plan to g , g pp g p
field engineers and common people through preparation of Manual, leaflets, booklets and by organizing workshops.
WORK PLANWORK PLAN
National Institute of Hydrology Regional Centre
T h i l t f it i f d t d d t t
National Institute of Hydrology, Regional Centre, Sagar
• Technical support for monitoring of data and data procurement.
• Assessment of present land use using remote sensing data and GIS for the
catchment area.
• Estimation of soil loss from the catchment.
• Assessment of sedimentation in the reservoir.
• Development of sediment prediction model.
• Prioritization of environmentally stressed areas in the catchment.
• Impact assessment analysis on sediment yield.
TIME SCHEDULEFirst Year
Data collection and p epa ation of in ento• Data collection and preparation of inventory.• Upgradation of gauging and sediment sampling sites.• Monitoring of hydrological and hydro-meteorological data.• Processing and analysis of hydrological and hydro-meteorological data • Generation of various thematic maps using GIS.• Interim report preparation (1st year).
Second YearSecond Year• Monitoring of hydrological and hydro-meteorological data.• Processing and analysis of hydrological and hydro-meteorological data • Evaluation of soil properties.• Assessment of present land use using remote sensing data and GIS. • Assessment of reservoir sedimentation.• Estimation of soil loss from the catchment.• Interim report preparation (2nd year). p p p ( y )
TIME SCHEDULE
Third Year • Monitoring of hydrological and hydro-meteorological data.• Processing and analysis of hydrological and hydro-meteorological data • Estimation of soil loss from the catchment • Development of sediment prediction model.• Dissemination of knowledge and findings to field engineers and common
people by organizing workshops.V lid ti f di t di ti d l• Validation of sediment prediction model.
• Prioritization of environmentally stressed areas. • Development of catchment area treatment plan.
Impact assessment analysis on sediment yield• Impact assessment analysis on sediment yield.• Dissemination of knowledge and findings to field engineers and common
people by organizing workshops.• Final report submission. a epo t sub ss o
BUDGET ESTIMATION (YEAR WISE) FOR WATER RESOURCES DEPTT CHHATTISGARH
Investment Cost
RESOURCES DEPTT, CHHATTISGARH
Items 1st Year 2nd Year 3rd Year Total
Consultancy support - - 200000 200000
Procurement of software and data acquisition
100000 100000 - 200000data acquisition
Civil works - 200000 200000 400000
Equipment 300000 100000 400000
Training workshop and courses - - 100000 100000Training workshop and courses 100000 100000
Total 100000 600000 600000 130000
Recurrent CostItems 1st Year 2nd Year 3rd Year Total
Incremental O&M costs - 80000 90000 170000
Incremental staff costs 50000 300000 300000 650000(including travel)
Total (Rs.) 50000 380000 390000 820000
BUDGET ESTIMATION (YEAR WISE) FOR NIH, RC, SAGAR
Investment CostItems 1st Year 2nd Year 3rd Year Total
Consultancy support - - - -
Procurement of software and data acquisition
200000 50000 - 250000data acquisition
Civil works - - - -
Equipment 100000 100000 - 200000
Training workshop and courses - - - -Training workshop and courses
Total 300000 150000 - 450000
Recurrent Cost
Items 1st Year 2nd Year 3rd Year Total
Incremental O&M costs - - - -
Incremental staff costs (including travel)
100000 300000 300000 700000(including travel)
Total (Rs.) 100000 300000 300000 700000
Skilled Person: Assistance in data collection, data analysis, compilation, field visits
TOTAL BUDGETTOTAL BUDGET
WATER RESOURCES DEPTT, CHHATTISGARH
Items 1st Year 2nd Year 3rd Year Total
Total Investment & recurrent Cost 150000 980000 990000 2120000
Contingency (5%) 7500 49000 495000 106000
SSub-total 157500 1029000 1039500 2226000
Overhead charges (20%) - - -
Total (Rs.) 157500 1029000 1039500 2226000
Grand Total (Rs.) 157500 1029000 1039500 2226000Grand Total (Rs.) 157500 1029000 1039500 2226000
Items 1st Year 2nd Year 3rd Year Total
NIH, RC, SAGAR
Total Investment & recurrent Cost 400000 450000 300000 1150000
Contingency (5%) 20000 22500 15000 57500
Sub-total 420000 472500 315000 1207500
O h d h (20%)Overhead charges (20%) - - -
Total (Rs.) 420000 472500 315000 1207500
Grand Total (Rs.) 420000 472500 315000 1207500
EXPECTED OUTCOMES
Revised elevation-capacity curve for the reservoir.Sediment modeling may be helpful to assess the relationship between siltload with hydrological and meteorological parameters.This results of the modeling study may be extended to other projects anddesign of new projects in Chhattisgarh statedesign of new projects in Chhattisgarh state.Causes of environmental degradation in the region.The conservation measures suggested, if implemented will enhance the lifeof reservoir and irrigation efficiencies.gThe awareness program supported with scientific study will encourage thelocal farmers and other field agencies for implementation of conservationmeasures.Th i iti ti t d ill b f l t l t th tibl tThe prioritization study will be useful to select the areas susceptible toserious erosion & impact assessment analysis may be useful to see theimpact of conservation measures.
TARGETED BENEFICIARIES
Water Resources Department
TARGETED BENEFICIARIES
p
Agriculture Department
Command Area Development Authority
Forest Department
Water Users Association
Farmers