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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