The ground is moving.
We measure it
in millimetres.

A canal is built to a gradient. Where the ground under it sinks, the canal loses capacity, and repair money follows where and how fast.

• Subsidence reports for the Friant-Kern Canal, California Aqueduct, Delta-Mendota Canal, Madera Canal and Eastside Bypass: a station every 500 m with the current rate, the change from a year earlier, and cumulative movement.
• Friant-Kern screened against the Eastern Tule GSA tier bands; every other canal against a standard rate screen, with the stretches that exceed each band listed.
• Quarterly change alerts that report only what moved: stations entering or worsening a band, and gaps in coverage called out as gaps. Each digest is reviewed by our team before it is sent.

Land subsidence is one of the indicators a sustainability plan is judged on. The annual report needs rates, trends and threshold checks that hold up to review.

• An annual-report subsidence chapter for a subbasin: current rate and cumulative movement since 2015, water-year trend tables, and threshold screening. We piloted it end to end on the Tule subbasin.
• Rate fields and point histories across the subbasin in the viewer, beside groundwater monitoring stations.
• A guided map story that walks a board or stakeholders through the subbasin's findings, step by step.

Linear assets cross hundreds of kilometres of ground. A few stretches sink fast enough to matter, and the hard part is knowing which.

• Rail lines, bridges and electric transmission lines across California, each carrying the latest subsidence rate measured beneath it, so finding what sits on fast-sinking ground takes a filter, not a study.
• Levee systems profiled at 500 m stations, with the fastest-sinking systems included in every quarterly report release.
• Bring your own alignment: load a pipeline or right-of-way file into the viewer and see it against the measured ground movement, then click any point along it for its history.

Gradual subsidence sits outside most California property cover, so it comes up where earth movement is written or disputed: at quote, and at claim.

• Underwriting screening: a per-address score with the latest rate at the location and the nearest building's screening class, one address at a time or a whole book in one run.
• Claims screening: a dated evidence report showing cumulative movement at a location, date by date, so a claims team can see whether movement was already under way before a given date.
• Screening, not proof. Every report is input to a professional engineer's assessment. It does not establish cause, and it does not decide coverage.

A property can look sound on the day it is inspected and still sit in a basin that is sinking centimetres a year.

• Bulk screening: send us a list of addresses or coordinates and get each one back with its rate and building screening class.
• Building subsidence scores across California's 12.1 million mapped building footprints, graded low, elevated, high or severe wherever the ground is measured.
• Flood map-lag: which mapped flood zones in the San Joaquin Valley sit on ground that has sunk since 2015, a sign that the map's elevation assumptions are ageing. The zones themselves are not redrawn.

A site visit captures one day. The measurement shows what the ground has been doing for years before it.

• Point histories and area statistics: click a point in a monitored time-series area for its displacement history, draw a polygon for area statistics, and download those statistics as CSV.
• Release comparison: set two releases side by side, so a change in a number can be traced to a change in the data.
• Method and limits in every deliverable, so the numbers can go into your own report with their caveats attached.

Subsidence in European towns follows aquifers, soft ground and old workings. Planners need to know which neighbourhoods sit on moving ground.

• Four areas monitored today: the Ebro valley, Bologna, the Iberian corridor and La Mancha, each as a displacement history over time.
• Building footprints for all four areas, crossed with the measured ground movement to list which buildings sit on moving ground.
• Click-to-chart histories for any point in those areas.