Water elevation · USGS gauge 06914995 · updated August 29, 2026
Water elevation
917.13ft
feet above sea level
Gauge 06914995, Hillsdale Lake near Hillsdale, KS, operated by the U.S. Geological Survey. The value above is the most recent reading on file with its own timestamp. When the gauge answers, it is replaced by the current one — no estimate is ever shown in place of a missing reading.
What this number is
Water elevation is the height of the lake surface above sea level, as surveyed at Hillsdale Lake near Hillsdale, KS. It is the number reservoir operators publish, and it is comparable from one reading to the next at this lake. It is not the depth of the water.
- Measured as
- Water elevation, ft above sea level
- Most recent reading on file
- 917.13 ft · August 29, 2026
- Water quality
- Readings on the lake page
The Corps of Engineers reads Hillsdale Dam & Reservoir at 916.73 ft, 0.27 ft below its Top of Conservation of 917.00 ft.
Both numbers come from the U.S. Army Corps of Engineers for its Hillsdale Dam & Reservoir project, on that project's own vertical datum (OTHER). That figure is a fixed level rather than a seasonal target, so a reservoir drawn down on purpose in autumn can sit well under it and still be exactly where the Corps intends. Because the datum is the project's own, this elevation is comparable to its own reference and to nothing else — not to a gauge reading from another agency, and not to a lake's mapped surface elevation.
Water quality at Hillsdale Lake
Hillsdale Lake's readings for total phosphorus, total nitrogen, chlorophyll-a, and turbidity are shown beside the EPA National Lakes Assessment condition classes for its own ecoregion. Clarity averages 3.7 feet of visibility, shown separately.
The gauge measures how much water is in the lake. The nutrient and algae readings measure what is in the water. A rise or a drawdown does not change those readings until the lake is sampled again.
Common questions
What is the water level at Hillsdale Lake right now?
The most recent reading from the USGS gauge at Hillsdale Lake near Hillsdale, KS is a water elevation of 917.13 ft, taken on August 29, 2026. This page reloads that gauge every time it is opened, so the number above is the current one whenever the station is reporting. USGS lake gauges typically post a new value every 15 to 60 minutes.
What does water elevation mean?
Water elevation is the height of the lake surface above sea level, as surveyed at Hillsdale Lake near Hillsdale, KS. It is the number reservoir operators publish, and it is comparable from one reading to the next at this lake. It is not the depth of the water.
Is Hillsdale Lake low?
Hillsdale Lake stood at 916.73 ft on September 27, 2026, 0.27 ft below its Top of Conservation of 917.00 ft. Both numbers come from the U.S. Army Corps of Engineers for its Hillsdale Dam & Reservoir project, on that project's own vertical datum (OTHER). That figure is a fixed level rather than a seasonal target, so a reservoir drawn down on purpose in autumn can sit well under it and still be exactly where the Corps intends. Because the datum is the project's own, this elevation is comparable to its own reference and to nothing else — not to a gauge reading from another agency, and not to a lake's mapped surface elevation.
Does the water level affect water quality at Hillsdale Lake?
Hillsdale Lake has nutrient and algae readings on record from state and federal monitoring. Each lake's nutrient and algae readings — total phosphorus, total nitrogen, chlorophyll-a, and turbidity — are shown beside the EPA National Lakes Assessment 2022 condition class for that lake's own ecoregion, so a reading is compared against the lakes it would naturally resemble. LakeQuality publishes no letter grade. None of that comes from the gauge. A drawdown can concentrate nutrients and a heavy inflow can dilute them, but neither shows up in the readings until the water is sampled again. Treat the two numbers as separate measurements of the same lake.
Where these numbers come from
The level and temperature are U.S. Geological Survey instantaneous values from gauge 06914995, a public feed with no licence restriction. The water-quality readings come from EPA Water Quality Portal samples submitted by USGS Kansas Water Science Center. For advisories and standards in Kansas, KDHE is the authority — a gauge reading is neither.