this is really not good.
I wouldn’t be concerned about these two microquakes.
Only if a swarm of microquakes under/adjacent to the reservoir develop would there be something to start looking at.
There are far greater threats to the dam right now. Take your pick.
(Emergency spillway erosion damage, Main Spillway cavitation/hydraulic undercutting, elevated brown river levels back to the powerhouse [starting to saturate the toe or the bottom point “V” of the main dam fill structure], evidence of “bubbling” where water flowed/leaked under the Emergency spillway, strong jets of sidewall streams in the upper Main spillway [these streams are from strong flow water leakage under the upper Main spillway concrete & can create structural stress on the concrete slabs from voiding, etc).
Oh, and there is a significant chance of rain/snowmelt inflow again....