17 dead newts, 0 live newts.
April 1, 2020 (Wednesday) 3:12pm
Weather: Dry, sunny, 65F, gorgeous.
Other roadkill: 1 grasshopper.
Coverage: Aldercroft Heights Road intersection to stop sign.
Rainfall: MTD 0in, YTD 18.07in (per http://www.weathercat.net/wxraindetail.php?year=2020)
Traffic: 2 walkers, 8 bicycles, 3 motorcycles, 43 cars, 7 parked cars fishing despite the reservoir being closed

Hardly any today, which isn't really surprising given the dryness. None at all north of the Soda Springs bend. I did find several juveniles, all but one of them in the same area. I removed all the newts that I could, with a few failures that I've noted in the comment below.

Newt map:

April 1st, 2020 (Wednesday) 9:30 am – 11:30 am: 0 live newts, 29 new dead newts, a few juveniles.
The weather was cold.
All newts observed today were new, as I removed everything last week. Today I also removed all newts but one from the road. I recorded the one that was left. I think it rained last over the weekend, and those 3-4 days that have passed were enough for some of the newts to dry completely. Some were already very difficult to remove from the road.
Other roadkills - some earthworms, millipedes, camel cricket, moth, snail, and a Western Skink. I also saw a live honey bee and a male honey bee on the road, and removed them.
Coverage: north part - the county park parking lot till the second stop sign.
Rainfall: (MTD: 0 in; YTD: 18.07 in). Data from - http://www.weathercat.net/wxraindetail.php
Traffic: 8 trucks, 24 cars (including County Parks maintenance pickup trucks), 8 bikes, 11 pedestrians.

April 7th, 2020 (Tuesday) 2:30 am – 4:30 pm: 23 new dead newts
The weather was nice, a bit cold. It rained constantly in San Jose from Saturday night till Monday afternoon.
All newts observed today were new, as I removed everything last week.
Other roadkills - some earthworms, a millipede, grasshopper, moth, caterpillar, honey bees, bumblebees, cicada, fly. I also saw a live honey bee on the road, and a fence lizard crossing the road, on the last curve before returning to the county park lot.
Coverage: north part - the county park parking lot till the second stop sign.
Rainfall: (MTD: 2.28 in; YTD: 20.35 in). Data from - http://www.weathercat.net/wxraindetail.php
Traffic: busy afternoon! no trucks, 51 (!) cars, 2 motorcycles, 30 bikes, 13 pedestrians.
The first county park parking lot (near the Jones trailhead) was closed, but the one in the middle of Alma Bridge Rd was open.
The creek near the lime kiln trail was running today, the first time this year! Last year it was running for a while, and newts were reproducing in it.

Coverage: Aldercroft Heights Road intersection to stop sign.
3:10pm - 5:01pm

Dead newts: 12 (UPDATED - it used to say 15, but there are actually only 12 uploaded), almost all on the side of the road away from the reservoir

Other critters: 1 fuzzy caterpillar, alive

Vehicles: 49 (!!!)
Bikes: 14

Weather: Cloudy, with occasional moist spit
Rainfall: MTD 2.34in, YTD 20.41in (per http://www.weathercat.net/wxraindetail.php?year=2020)

So many cars! People entertaining themselves at the reservoir with the time off, I suppose. Had a good chat with one person who asked what I was doing.

And so many ticks! I looked down at one point and had 6 crawling up my leg.

Weird stuff keeps happening when I try to upload the photos from this week, they'll get up eventually.

April 14th, 2020 (Tuesday) 8:45 am – 10:25 pm: 10 new dead newts, 2 of them juveniles.
The weather was nice. There was no rain in the past week.
All newts observed today were new, as I removed everything last week, and did so again today.
Other roadkills - some earthworms, a millipede a cricket, moth, caterpillars, beetles, bumblebees, cicada, harvestman. Ants were feeding on some of the dead arthropods on the road.
Coverage: north part - the county park parking lot till the second stop sign.
Rainfall: (MTD: 2.35 in; YTD: 20.42 in). Data from - http://www.weathercat.net/wxraindetail.php
Traffic: 5 trucks, 20 cars, 11 bikes, 8 pedestrians.
The first county park parking lot (near the Jones trailhead) was closed, but the one in the middle of Alma Bridge Rd was open.
The creek near the lime kiln trail was dry, after running for the first time last week.

Coverage: Aldercroft Heights Road intersection to stop sign.
3:48pm - 5:20pm

Dead newts: 7, almost all on the side of the road away from the reservoir again
Other critters: 2 dead butterflies (that looked like they were mating at the time!), 1 dead garter snake, 2 dead fence lizards, 1 dead grasshopper (I think that's what it was)

Vehicles: 41
Bikes: 11
Pedestrians: 3

Weather: Warm and clear, in the 80s, hasn't rained in a while
Rainfall: MTD 2.35in, YTD 20.42in (per http://www.weathercat.net/wxraindetail.php?year=2020)

I removed from the road all of the dead reptiles I found.

More flowers blooming along the road. No ticks on me this time.

April 22nd, 2020 (Wednesday) 10 am – 11:30 pm: 9 new dead newts, 1 juvenile.
The weather was nice.
All newts observed today were new, as I removed everything last week, and did so again today.
Other roadkills - a large alligator lizard, a fence lizard, a few beetles, a wolf spider with its babies...

Coverage: north part - the county park parking lot till the second stop sign.
Rainfall: (MTD: 2.39 in; YTD: 20.46 in). Data from - http://www.weathercat.net/wxraindetail.php
Traffic: 1 truck, 30 cars, 2 motorcycles, 10 bikes, 15 pedestrians.
All county park parking lots were open.
So they're still out and about...

April 29th, 2020 (Wednesday) 9 am – 11:00 pm: 2 new dead newts.
The weather was a bit cool, overcast.
All newts observed today were new, as I removed everything last week, and did so again today.
Other roadkills - some bumblebees, honey bees (at least 3 more than the documented ones), a beetle, a small scorpion, a centipede (I saw another one crossing the road), a caterpillar.
Coverage: north part - the county park parking lot till the second stop sign. There's a dead newt right after the stop sign, so technically I'm not supposed to document it. I thought I'd leave it there and add it to the decomposition study and remove it from this project - https://www.inaturalist.org/observations/44318202
Rainfall: (MTD: 2.4 in; YTD: 20.40 in). Data from - http://www.weathercat.net/wxraindetail.php
Traffic: 5 trucks, 21 cars, 14 bikes, 19 pedestrians.
All county park parking lots were open.