California Crop Stress Index

For each block we average its midday stem water potential minus the fully-watered baseline (Δbar) over the week, quality-checked readings only. We count a block as past the trigger at 8 bars below baseline for almond, prune and grape, and 12 for olive. That is one number for three crops because the index uses one; your PCA may set yours somewhere else. A crop or region appears only when it has five or more blocks. Sandbox devices and customers who have opted out of public aggregates are left out. Year-over-year compares the same calendar week, and the blocks in the network change between years, so it compares the network to itself. Regions are latitude bands, which puts coastal vineyards at valley latitudes into the valley bands, so read the grape figures network-wide.

A block is counted when its pump sensor recorded any irrigation in the twelve weeks up to and including the week shown, so a block without a pump sensor is not counted. Ran water means at least one recorded irrigation in the week. Hours are the summed event durations, and the figure shown is the median for the blocks that ran. Inches, where shown, are applied depth from each block's whole-block flow rate and acreage (hours times gallons per hour, over 27,154 gallons per acre-inch, over acres), for blocks whose records pass the same plausibility band the water-accounting report uses, and only where five or more such blocks ran. Most blocks do not yet have both records, so most rows show hours only. A crop or region appears only when it has five or more blocks. Sandbox devices and customers who have opted out of public aggregates are left out. Year-over-year compares the same calendar week, and the blocks in the network change between years, so it compares the network to itself. This panel shows the last complete week; the stress panel above shows the week under way.