Bhama Consultancy Services , Pune
WELCOME
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Presentation on
Hydrological Studies
Location:DIRD,PUNE Date:2 JUNE 2011
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It is the science which deals with occurrence ,movement and distribution of water upon ,over and beneath the earth surface .It is in the form of cycle and known as hydrological cycle
WHAT IS HYDROLOGY?
Hydrological Cycle
PRECIPITATIONIt is the fall of water in various forms on the earth from the atmosphere. It is in the form of rain , snow, hail, and dew
Air contains gases/such as Nitrogen,Hydrigen,Oxygen ,Co2, and Water vapors
How Precipitation Occurs ?
I.ConvectiveII.OrograpicIII.TrouphIV.Cyclonic
Types of Precipitation
I CONVECTIVE
I.OROGRAPIC
III.TROUPH
VI.CYCLONIC
STANDARD RAIN GAUGE STATION
Auto Recording Rain gauge Station
Spatial DistributionRain fall measured by RG is point rain fall it varies over time and spare
Sr. No Rain Gauge Station
Area Sq Km Weightage
1 Gondia 838.1 0.302 Rengepar 44.92 0.023 Deori 328.52 0.124 Bonde 46.28 0.025 Sirpur 616.95 0.226 Pipriya 908.23 0.327 Mahalgaon Not Influencing 8 Total 2783 1
Bagh Sub Basin- Isohyets ( Annual Average Rain Fall)
Time series for weighted average rain fall over the sub basin
TIME SERIES
Dependability 95%90%75%60%50%
MaxMinAverage STDCV
Parameters
Inflow
B Tank Table Data
Inflow=Final storage – Initial storage + spills + withdrawals
A Stream Gauging
I. Stage GaugingII. Stage Discharge CurveIII. DischargeIV. inflow
The discharge measurement
The stage-discharge relation
Measuring stream stage
How Stream flow is Measured
Hydrologic Modeling
BAGH SUB-BASIN , GROUPS OF CATCHMENT AND THISSEN POLYGON
Hydrological analysis for Bagh Sub-Basin
1. Rain fall Analysis a)Weighted average rain fall series over the Sirpur catchment for Juneb)Yearwise Monthly Weighted average Rain fall Sears over Sirpur catchment 2.Yeald Analysisa) Daily Monthwise inflow at Sirpur b) Historical Monthly inflows at Sirpur 3.R R Modeling -Calibration –June – October for sirpur
4. Generated yield series –Sirpur a) For June b) Month wise yield series c) Annual R R Model
5. Repeat above step 1 To 4 For Kalisarar on Bagh and Pipriya Eastern Bagh
Hydrological Analysis for different catchments in Bagh sub basin
Summary of Monthly Inflows for different catchment in
Bagh sub basin
Monthly year wise yield series for different catchment in
Bagh Sub basin
ABSTRACT
1.Watershed , catchment and influencing Rain Gauge station
2. Year wise monthly wt. rainfall and yield for Watershed -WWG-6
3. Watershed Catalog – Watershed wise Monthly Rainfall and Yields in Bagh Sub Basin
WATERSHED CATALOG FOR BAGH SUB BASIN