One option is to create a script file.
Right click on the database -> Tasks -> Generate Scripts
Then you can select all the stored procedures and generate the script with all the sps. So you can find the reference from there.
Or
-- Search in All Objects
SELECT OBJECT_NAME(OBJECT_ID),
definition
FROM sys.sql_modules
WHERE definition LIKE '%' + 'CreatedDate' + '%'
GO
-- Search in Stored Procedure Only
SELECT DISTINCT OBJECT_NAME(OBJECT_ID),
object_definition(OBJECT_ID)
FROM sys.Procedures
WHERE object_definition(OBJECT_ID) LIKE '%' + 'CreatedDate' + '%'
GO
Source SQL SERVER – Find Column Used in Stored Procedure – Search Stored Procedure for Column Name