💧HYDROLOGY

Important Indices -

❄️Index of wetness (IOW) -
• IOW = (rainfall in a given area at given place) / (average annual rainfall of that place)

• % Rain Deficiency = 100 - % of IOW


❄️Aridity Index(AI) -
• AI  = ((PET - AET) / PET) × 100
where, PET = potential evapotranspiration
           AET = actual evapotranspiration
• AI < 25         => Mild Arid
• AI = 25-50   => Moderate Arid
• AI > 50         => Severe Arid

#Hydrology

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🔴What To read In Hydrology?

👁‍🗨Imp points :

1⃣Slope of Mass Curve= Intensity of Rainfall

2⃣Ordinate of Mass Curve = Cumulative Rainfall

3⃣Area Under Hyetograph= Total Depth of Rainfall

4⃣Ordinate of Hyetograph= intensity of Rainfall

5⃣Hydrograph= Discharge vs Time

6⃣Ordinate of Hydrograph= Discharge

7⃣Area Under Hydrograph= volume of Runoff

8⃣Double Mass Curve= to remove inConsistency

9⃣Infiltration curve= Horton

🔟Infiltration Index= Average rate of Infiltration

🟠S-Curve = Infinite Unit Hydrographs

🟡Slope of S-Curve = Ordinates of Instantaneous Unit Hydrography

🟢Unit Hydrograph= given By Sherman

🔵Synthetic Unit Hydrograph =Given By Snyder

🟣Distribution Graph= Bernard

⚫️Hyetograph Of Rainfall= Hyetograph

🟥Hyetograph of Runoff= supra Rainfall Or Effective rainfall Hyetograph

🟧Hyetograph & Distribution Graph = Both Barcharts

🟨S-Curve = Can be shifted only Once

🟩At Max 2 S-Curves are Possible

🟦Lysimeter & Hargreaves Class A Pan= Evapotranspiration

⬛️Muskingham Method =River/ channel Routing

⬜️GoodRich Method = Reservoir Routing

🟫Water Budget Method= Law of Conservation of Mass

🟪Unit Hydrograph is a Hydrograph resulting From Unit Depth of Runoff.

#hydrology

Join
@macedhule ✅✅

🔴What To read In Hydrology?

👁‍🗨Imp points :

1⃣Slope of Mass Curve= Intensity of Rainfall

2⃣Ordinate of Mass Curve = Cumulative Rainfall

3⃣Area Under Hyetograph= Total Depth of Rainfall

4⃣Ordinate of Hyetograph= intensity of Rainfall

5⃣Hydrograph= Discharge vs Time

6⃣Ordinate of Hydrograph= Discharge

7⃣Area Under Hydrograph= volume of Runoff

8⃣Double Mass Curve= to remove inConsistency

9⃣Infiltration curve= Horton

🔟Infiltration Index= Average rate of Infiltration

🟠S-Curve = Infinite Unit Hydrographs

🟡Slope of S-Curve = Ordinates of Instantaneous Unit Hydrography

🟢Unit Hydrograph= given By Sherman

🔵Synthetic Unit Hydrograph =Given By Snyder

🟣Distribution Graph= Bernard

⚫️Hyetograph Of Rainfall= Hyetograph

🟥Hyetograph of Runoff= supra Rainfall Or Effective rainfall Hyetograph

🟧Hyetograph & Distribution Graph = Both Barcharts

🟨S-Curve = Can be shifted only Once

🟩At Max 2 S-Curves are Possible

🟦Lysimeter & Hargreaves Class A Pan= Evapotranspiration

⬛️Muskingham Method =River/ channel Routing

⬜️GoodRich Method = Reservoir Routing

🟫Water Budget Method= Law of Conservation of Mass

🟪Unit Hydrograph is a Hydrograph resulting From Unit Depth of Runoff.

#hydrology

Join
@macedhule ✅✅