According to this report in the CoCo Times, the Delta's health is only worsening.
The quick recap is that fish population in the Delta — including striped bass, shad and, of course, the often-reviled Delta smelt — is at all-time low levels. This indicates that there's something, possibly many things, not right in our local waterways. (Not that that's a newsflash or anything.)
The guessed culprits are familiar: Fresh water being sucked out or dammed out of the Delta; salt and other contaminants being dumped in the Delta; invasive species taking food and habitat from native species.
And the Sacramento-supported solution for this collapsing ecosystem is to export fresh, life-giving water around it? Sigh.