Field Notes

Vaira: 2023-01-06 11:00:00 (DOY 6)
Author: Joe Verfaillie
Others:

Summary: First visit of the year, several big storms past more to come, standard data collection, all looks well

Vaira
2023-01-06

I arrived at about 11:00am. It was overcast and cool with a breeze from the southeast at about 135 deg true. There have been several big storms over the Christmas/New Year’s holidays. Both Jackson Road from Sacramento and Twin Cities Rd from the Delta were closed due to flooding and Twin Cities is still closed. Here, there is almost no evidence of the storms other than the extra water – rivulets and puddles in the road. I assume the water hole was full but I was concentrating on getting through the puddles when I drove past it. I drove down the hill to the creek but got out, jumped the creek and walked the rest of the way to the pond. The pond was full to over flowing.

At the site I measured the well, and collected the flux, met, camera and FD data. No problems noticed.
The 7500 read: 428.2ppm CO2, 320.6mmol/m3 H2O, 18.2C, 100.5kPa, 102.4SS
The sonic is aligned close to magnetic north at 16deg true.

The equipment was dry – no water droplets on anything so probably been windy and dry for a bit. The grass cover has not changed much – no spectra today as the equipment is being used in the Delta.

I left at 11:50

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2023-01-06	VR_well	56.45
2023-01-06	VR_pond	22.42
2023-01-06	TZ_floor	29.15
2023-01-06	TZ_tower	33.55
2023-01-06	TZ_road	36
2023-01-06	HS	4.94
2023-01-06	WP	1.15
2023-01-06	EE	1.05
2023-01-06	MB	1.67