---
title: what the great salt lake actually is
canonical_url: https://ensurance.app/guide/what-the-great-salt-lake-actually-is
markdown_url: https://ensurance.app/guide/what-the-great-salt-lake-actually-is.md
subtitle: "three rivers end here, and the lake keeps the level they leave"
category: ecosystem-services
---

# what the great salt lake actually is

*three rivers end here, and the lake keeps the level they leave*

If you live along the Wasatch Front, you already know the drive. West out of Salt Lake City, the grid loosens, the ground goes pale, and the water in front of you sits there. On 17 September 2026, the photograph with that week's lake story showed birds over an airboat in Farmington Bay, on the east side. The bay looks like a place a river could leave. The water stays.

Salt Lake City is the door. The **Great Salt Lake** is the water on the other side of it.

The lake is a **terminal lake** in northern Utah. The **Bear River**, the **Weber River**, and the **Jordan River** flow in. Rain falls on the surface. A little groundwater seeps in. Evaporation is the outlet. The salt stays. The elevation those inflows leave behind is the lake that **brine shrimp**, **microbialites**, and a **Pacific Flyway** stopover are actually living in. A dry year moves that elevation. So does water used on the way down. Both change how salty the remainder gets, because the salt has nowhere to go but the lake.

## three rivers end here

The Bear arrives from the north, through Bear River Bay. It is an interstate river before it is a Utah one, with headwaters in Wyoming and Idaho. The Weber comes off the Wasatch. The Jordan in this watershed is the river that leaves Utah Lake and finishes here.

A Utah State University extension fact sheet gives a rounded picture of an average year. Other studies differ by period, gage network, and how they count groundwater. The shares below are that average. They are not the water year now ending.

| inflow | about | share |
|---|---|---|
| Bear River basin | 1,283 thousand acre-feet | about 39% of inflow |
| Jordan and Provo | 462 thousand acre-feet | about 14% |
| Weber River basin | 373 thousand acre-feet | about 11% |
| all gauged tributaries | 2,118 thousand acre-feet | about 65% |
| rain on the lake | 1,077 thousand acre-feet | about 33% |
| groundwater | 75 thousand acre-feet | about 2% |
| evaporation, the way water leaves | 3,217 thousand acre-feet | — |

The Bear is the large share, about 39 percent. Jordan and Provo together are about 14 percent. The Weber is about 11 percent. Those three add to about 64 percent. All gauged tributaries together are about 65 percent, so other creeks are a sliver, and the three named systems are the river story. They also sit inside that gauged total. Stacking them on top of the 65 percent counts the same water twice.

Rain on the lake is about a third of inflow. Groundwater is about 2 percent. Evaporation on the same sheet is about 3,217 thousand acre-feet, larger than the gauged rivers alone. Rain and groundwater are the rest of what the sheet calls inflow. On an average year in this sheet, evaporation is how the lake spends what arrived.

The Northwestern Band of the Shoshone Nation, the Ute Indian Tribe of the Uintah and Ouray Reservation, the Skull Valley Band of Goshute, and the Confederated Tribes of the Goshute Reservation have documented ties to this Great Basin country, including the lake and Utah Lake. They are sovereign neighbors of this water.

:::johnson
**the great salt lake is where the rivers have to stay.**

The Bear, the Weber, and the Jordan end in it. The level they leave is the lake the shrimp, the mats, and the birds get.

[what brine shrimp need the lake to be →](/guide/what-brine-shrimp-need-the-lake-to-be?from=guide)
:::

## the level they leave

Carter Williams, writing for KSL through the Great Salt Lake Collaborative, posted on 25 September 2026. The elevations in that story are as of Wednesday, after the summer drop: south arm 4,189.7 feet, north arm 4,189.6 feet. The south arm sat a tenth of a foot above the north arm. A causeway separates the arms, and the north arm runs saltier. The tenth is the elevation gap in that one report.

KSL put the lake over 8 feet below its minimum healthy level, and a little more than a foot above its lowest point on record, set in 2022. A Utah Division of Water Resources and U.S. Geological Survey narrative puts the November 2022 south-arm record at 4,188.5 feet. Take 4,189.7 minus 4,188.5 and you get 1.2 feet. That is the arithmetic inside "a little more than a foot," with both sources named.

If you checked a harbor gage the same month, you may have seen another tenth. The Great Salt Lake Ecosystem Program's water-levels page shows Saltair Boat Harbor at 4,189.8 feet on Sunday, 20 September 2026, at 9:45 a.m. Different day, different gage. Leave them side by side.

KSL's account says the lake should start to gain as irrigation season closes, and that the healthy mark stays out of reach without a real shift in how much water arrives. The piece points to water used before it can reach the lake, and to a long drought. Governor Cox has named the 2034 Winter Olympics as the public deadline on that shift. The acre-feet behind the deadline are [the bear, the weber, and the jordan](/guide/the-bear-the-weber-and-the-jordan?from=guide).

On a lake this shallow, a foot of elevation is a different shoreline from the one you walked in a higher year.

## what lives at that level

Brine shrimp live in the salt and the depth this elevation gives them. Companies already harvest them, in season, under a count the state runs. The salinity, the season, and the population that can stand the harvest are [what brine shrimp need the lake to be](/guide/what-brine-shrimp-need-the-lake-to-be?from=guide).

Microbialites are the living mounds on the bottom. They work when the water covers them. When the level falls, the mats dry. The mounds get their own post: [a microbialite is not a water level](/guide/a-microbialite-is-not-a-water-level?from=guide).

Shorebirds and eared grebes use the lake as a Pacific Flyway stop. The Bear River Migratory Bird Refuge sits where the Bear comes in, a wetland complex on that flyway. How many birds a survey counts changes with the year. They stop here when the level can still feed them.

When the water leaves a stretch of bed, the bed is what the wind can lift. The dust is the lake, uncovered. Area, hot spots, and the health receipt are [great salt lake dust is the lakebed](/guide/great-salt-lake-dust-is-the-lakebed?from=guide). Water back on the bed is the fix that matches the lake.

## who depends on the stop

The lake depends on arrival: the Bear, the Weber, the Jordan, rain on the surface, and a thin groundwater share. The life depends on the level that arrival leaves.

If you move water for a city or a canal on one of the three rivers, the lake is the last line in the account. On the Weber, the Weber Basin Water Conservancy District is one of the operators between the mountains and that line. Farms along the Bear, including in Cache Valley, draw on the largest of the three rivers before it becomes lake. Who already turns a share back toward the lake, and on what terms, is [who already sends water to the lake](/guide/who-already-sends-water-to-the-lake?from=guide).

If you live in Salt Lake City, Ogden, or Provo, you meet the lake as a shore, a sky, and, when the bed is bare, as air. The water in the lake is salt. The tap is a different system, upstream of this ending. The dependency with your name on it is still the elevation: the shore you can see, and the bed you would rather keep underwater.

## the people already doing the work

The Utah Legislature created the Office of the Great Salt Lake Commissioner in 2023 to keep a strategic plan and to coordinate the agencies and interests on the lake.

Hannah Freeze, the Great Salt Lake commissioner, Lindsie Smith, executive director of the Great Salt Lake Alliance, and John Luft, manager of the Great Salt Lake Ecosystem Program, already hold the plan, the coalition, and the living count.

On 22 June 2026 the Alliance and the Commissioner's Office convened a Solutions Exchange with 47 organizations, across government, universities, nonprofits, agriculture, industry, and philanthropy. The report was published 25 September 2026, the same day as the KSL elevation story. KSL described the room as nearly 50 organizations. The state's release counts 47.

The report's next steps are solutions-focused education, clearer access to implementation information, and folding the findings into state planning. Freeze called the exchange stakeholder input for the Great Salt Lake Strategic Plan. Smith called the job connecting work that is already succeeding.

## the lake comes first

The Great Salt Lake, its brine shrimp, and its microbialites exist whether or not anyone buys a certificate. Ensurance funds that condition. It is not the lake.

The place account for this water is [great salt lake](/great-salt-lake.basin?from=guide). The living-water theme for rivers and lakes more broadly is [rivers and lakes](/rivers-lakes.ensurance?from=guide). That funding sits beside Freeze's office, the Alliance, and the Ecosystem Program. Those three remain the people doing the work.

Two reads carry the rest. [What brine shrimp need the lake to be](/guide/what-brine-shrimp-need-the-lake-to-be?from=guide) stays with the animal and the season. [The bear, the weber, and the jordan](/guide/the-bear-the-weber-and-the-jordan?from=guide) stays with the water that has to arrive before the level can hold.

## frequently asked questions

### what is the great salt lake?

The Great Salt Lake is a terminal lake in northern Utah. The Bear, the Weber, and the Jordan end in it, with rain on the surface and a little groundwater. Evaporation is the outlet. The level those inflows leave is the condition brine shrimp, microbialites, and a Pacific Flyway stopover live in.

### which rivers flow into the great salt lake?

The Bear, the Weber, and the Jordan. On the rounded Utah State University extension fact sheet, the Bear River basin is about 39 percent of inflow, Jordan and Provo about 14 percent, and the Weber about 11 percent. All gauged tributaries are about 65 percent. Rain on the lake is about 33 percent. Other studies differ.

### how low is the great salt lake?

KSL, posted 25 September 2026, put the south arm at 4,189.7 feet and the north arm at 4,189.6 feet as of Wednesday, after the summer drop: over 8 feet below its minimum healthy level, and a little more than a foot above the 2022 record low. The November 2022 south-arm record in the Utah Division of Water Resources and U.S. Geological Survey narrative is 4,188.5 feet, 1.2 feet under that south-arm reading. Saltair Boat Harbor read 4,189.8 feet at 9:45 a.m. on Sunday, 20 September 2026, on a different gage.

### why is the great salt lake salty?

Rivers bring a little dissolved salt. Vapor leaves, and the salt remains. The causeway leaves the north arm saltier than the south, which is the split the shrimp and the mats live in.

### is salt lake city the great salt lake?

Salt Lake City is the door on the east side of the valley: the grid, the airport, the name on the sign. The Great Salt Lake is the terminal water west of that door.

## sources

[Many groups are trying to save the Great Salt Lake](https://www.ksl.com/article/51627764/many-groups-are-trying-to-save-the-great-salt-lake-heres-how-they-can-better-collaborate) — Carter Williams, KSL, posted 25 September 2026, through the Great Salt Lake Collaborative. South arm 4,189.7 feet and north arm 4,189.6 feet as of Wednesday, after the summer drop. Over 8 feet below its minimum healthy level, and a little more than a foot above the 2022 record low. Birds over an airboat in Farmington Bay on 17 September. Hannah Freeze and Lindsie Smith on the collaboration report. The article describes the June session as nearly 50 organizations.

[Great Salt Lake Solutions Exchange report](https://greatsaltlake.utah.gov/updates/great-salt-lake-solutions-exchange-report-identifies-opportunities-to-strengthen-utahs-lake-solutions/) — Great Salt Lake Alliance and the Office of the Great Salt Lake Commissioner, published 25 September 2026. Exchange held 22 June with 47 organizations. Next steps: solutions-focused education, better access to implementation information, and findings folded into state planning. The Legislature created the Commissioner's Office in 2023.

[Great Salt Lake water levels](https://wildlife.utah.gov/gslep/waterlevels) — Great Salt Lake Ecosystem Program. Saltair Boat Harbor at 4,189.8 feet, Sunday 20 September 2026, 9:45 a.m. A different day and a different gage from the 25 September pair.

[Great Salt Lake fact sheet](https://hydrology.usu.edu/dtarb/GSLFactSheet.pdf) — Utah State University extension compilation, rounded. Bear River basin, Jordan/Provo, Weber, all gauged tributaries, direct precipitation, groundwater, and evaporation. Other studies differ.

Utah Division of Water Resources and U.S. Geological Survey narrative — November 2022 south-arm record low of 4,188.5 feet. Set beside the KSL south-arm reading of 4,189.7 feet, the difference is 1.2 feet. The two figures stay separate.

## the series

Six posts on the Great Salt Lake: what it is, what lives at its level, and who already sends water toward it.

1. [what the great salt lake actually is](/guide/what-the-great-salt-lake-actually-is?from=guide) *(this post)*
2. [what brine shrimp need the lake to be](/guide/what-brine-shrimp-need-the-lake-to-be?from=guide)
3. [a microbialite is not a water level](/guide/a-microbialite-is-not-a-water-level?from=guide)
4. [great salt lake dust is the lakebed](/guide/great-salt-lake-dust-is-the-lakebed?from=guide)
5. [the bear, the weber, and the jordan](/guide/the-bear-the-weber-and-the-jordan?from=guide)
6. [who already sends water to the lake](/guide/who-already-sends-water-to-the-lake?from=guide)