NDMI | How to Calculate Normalized Difference Moisture Index in ArcGIS

NDMI is used to determine vegetation water content. It is calculated as a ratio between the NIR and SWIR values.
Formula for NDMI, NDMI= (NIR - SWIR) / (NIR + SWIR)
In Landsat 8, NDMI = (Band 5 – Band 6) / (Band 5 + Band 6)
In Landsat 4-7, NDMI = (Band 4 – Band 5) / (Band 4 + Band 5)

Steps to be Followed:

Step 1: Download Landsat Satellite Image, Here I’ll calculate NDMI using Landsat 8 Satellite Image. Download Satellite Image:

Step 2: Open ArcMap and Add Image (Band 5 and Band 6)

Step 3: Go to Arc Toolbox -=Spatial Analyst Tools --Map Algebra -- Raster Calculator

Step 4: Then Just do according to Formula (Band 5-Band 6) / (Band 5+ Band 6) (Example, Float (“Band 5-Band 6”) / Float (“Band 5 +Band 6”) and Rename, Then Specify the folder where you want to save and Click okay.

Step 5: NDMI is done. Now you can show the moisture content in color using Symbology option. Just follow me.

Check my Videos for How to calculate NDVI, NDWI, NDBI.

Our others important Tutorial:

Related Tags: Soil moisture Index, how to calculate moisture index in gis, how to calculate vegetation water content, Normalized Difference Moisture Index , how to calculate NDMI, NDMI in Arcgis, NDVI, NDWI, NDBI

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[GISRSSolution]

If you have any queries, feel free to write me in comments section. I'll be happy to help you :)

[khitishmoharana]

What is the value limits for this index. Like NDVI it varies from -1 to+1.

[ainylatif]

WHAT SHOULD BE THE BREAK VALUES FOR NDMI, NDVI. NDBI AND BU INDEX?

[BaidyanathHazra-rwtj]

What is the difference between LSWI and NDMI as their formula is same.

[bahadarkhan]

sir in USGS there is no 4-7 landset sir where from you download it

[aimanfaiz]

hello, may I know how I want to use the NDMI, to process the thermal image to detect moisture on the building wall.
Is there any way?

[mirzawaleed]

Brother, why do you still use ArcGIS 10.4.1 where as 10.8 is available?
and if so why do you prefer this version over others?

[hidayahazman]

Hello I am Hidayah, regarding to label frm wet to dry how you disappear the value of numbers in between? i mean how do you that?

[saleh]

can anyone tell me what is the difference between NDMI and NDWI?