I can see Riggle's point. When dealing with cool season grasses in extreme heat, you cannot exactly invite the lawn into your house or truck where the AC is keeping things at 75 or less. The light waterings in the day are for temperature management. Look at what golf supers do to keep bent grass alive. They do not water 1" once a week. No, in hot weather it is light waterings, up to several times a day if needed. I do it too, when it suddenly goes up to the 90s. You might be doing what the water board wants you to do, but the water board is not responsible for damaged grass from their recommendations.
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Benjamin Franklin 1775
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Benjamin Franklin Poor Richard's Almanac1738