river in Shaanxi province
灞 is a specific proper noun referring to a river in Shaanxi province. It has no broader conceptual meaning beyond this geographical name.
灞 combines 氵 (water) with 霸, which likely provides the sound. It was created as a character for a specific river name.
The water radical 氵 on the left marks this as a river. The right side 霸 is the sound component, so together they name the Ba River in Shaanxi.
For ハ, imagine the river laughing 'ha!' as it flows: ha -> ハ, and the water 氵 carries the sound.
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