Great Salt Lake Ecosystem Project Great Salt Lake Ecosystem Project
Harvesting brine shrimp in the Great Salt Lake

Brine shrimp harvests

An overview of harvests in the Great Salt Lake, past and present

Harvesting brine shrimp in the Great Salt Lake

The brine shrimp harvest industry in the Great Salt Lake has been valued at $10 to $60 million, depending on the quality and quantity of brine shrimp cysts harvested. Just as brine shrimp are dependent upon the lake's functioning environment for survival, so are the harvest companies as well. As of 2022, 21 companies are now harvesting brine shrimp in the North and South Arms of the lake.

Commercial harvesting of brine shrimp from the Great Salt Lake began in 1950. Today, the terms and conditions for harvesting are established by a DWR Administrative Rule:

Administrative Rule R657-52: Commercial harvesting of brine shrimp and brine shrimp eggs, including the permitting of harvesting companies.

As stated in the rule, companies wishing to harvest shrimp in the Great Salt Lake must purchase a Certificate of Registration (COR) annually. Seventy-nine Certificates of Registration are available to purchase each year.

The Utah Division of Wildlife Resources regulates the harvest and ensures a viable shrimp population by allowing a sufficient number of cysts to repopulate the lake each spring. The estimated minimum cyst number is currently 21 cysts per liter at the end of each harvest season.

Harvest procedure

Over time, winds and wave action will pile brine shrimp cysts on beaches. The original harvest method was to rake, shovel, bag and then transport cyst piles by ATVs to waiting trucks or boats. This method still accounts for a large proportion of the total product taken from the Great Salt Lake.

Another harvest method is to use large floating mats to accumulate cysts in the water. These mats are referred to as "streaks" or "slicks," and some are large enough to be seen from space.

Harvester boat in the Great Salt Lake

To find a suitable area to harvest, a spotter airplane will fly over the lake, identifying the streaks that are full of cysts and recording their coordinates. The pilot will then radio the coordinates to the harvester boats, which will quickly move to the streaks and then display bright orange-lettered or numbered buoys to claim an area.

Harvesters will then encircle the streak by deploying a floating containment device very similar to an oil containment boom. The cysts within the streak are then condensed into very small hoops, and vacuum pumps pump the cysts into 2,000-pound capacity mesh bags that rest on the deck of the harvester boat.

The contents of these bags are called "raw product," and they must be washed in order to remove any broken shells, feathers or other debris. Additional processing of cysts prior to selling them on the marketplace involves a period of cold storage, washing them with freshwater to remove salt and other debris, drying them and vacuum sealing them in various containers. Once they are fully processed, they are graded based on their hatch rates and sold at different prices based on their grade quality.

Brine shrimp cysts on the shore of the Great Salt Lake

As the brine shrimp industry has expanded, technology has as well. Advances in communication, Global Positioning Systems, night vision and spotter airplanes, as well as 20-hour or longer harvest days, have increased the efficiency of the harvest by at least four times. In other words, companies today are able to collect four times the weight of cysts compared to when they started in 1950.

Harvest seasons usually begin in October and end in January, as mandated in the DWR Administrative Rule. The DWR conducts regular sampling runs in the Great Salt Lake during each harvest season to monitor the brine shrimp population, and compiles reports of the commercial harvest totals.

Historical harvest totals: View annual totals of brine shrimp harvest totals dating back to the 1985–86 season.

Here is a summary of the most recent harvest season:

2021–22 harvest season

Sampling data

Sorted by brine shrimp sex and life stage. Values are per liter of lake water. (See previous seasons.)

Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Jan. 24 19.95 0.00 0.00 0.00 0.00 0.00 0.00 0.00

The 2021–22 brine shrimp harvest season will officially be closed on Jan. 27, 2022, at 5:39 p.m. MST (official sunset) in both the North and South Arms (lake and shore) pursuant to Rule R657-52-12. Harvest may continue on the salt ponds, but must still be reported to the UDWR in the same manner as during the regular season.

**Please remember to remove all debris and trash from the shore and lake resulting from harvesting activity.

Jan. 20 11.58 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Jan. 10 64.71 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Dec. 20 18.97 0.01 0.00 0.02 0.01 0.00 0.01 0.00
Dec. 7 38.60 0.05 0.01 0.06 0.04 0.02 0.01 0.01
Nov. 29 43.07 0.04 0.01 0.12 0.05 0.02 0.01 0.02
Nov. 22 63.03 0.04 0.00 0.14 0.10 0.03 0.04 0.03
Nov. 15 64.42 0.12 0.00 0.19 0.13 0.06 0.02 0.04
Nov. 3 76.50 0.07 0.00 0.24 0.26 0.14 0.02 0.10
Oct. 28 133.34 0.09 0.01 0.31 0.29 0.14 0.04 0.11
Oct. 21 147.93 0.03 0.01 0.39 0.39 0.19 0.04 0.16
Sep. 27 171.75 0.50 0.24 0.72 0.72 0.46 0.06 0.20

The harvest season will begin at noon on Friday, Oct. 1, 2021.

Feb. 22 47.51 0.00 0.00 0.00 0.00 0.00 0.00 0.00

The 2020–21 brine shrimp harvest season will officially be closed on Feb. 28, 2021, at 6:18 p.m. MST (official sunset) in the South Arm shore pursuant to Rule R657-52-12. Harvest may continue on the salt ponds, but must still be reported to the UDWR in the same manner as during the regular season.

**Please remember to remove all debris and trash from the shore and lake resulting from harvesting activity.

Feb. 1 53.37 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Harvest totals

Values are in pounds. (See previous seasons.)

Date Lake Shore Salt Ponds Total
Jan. 25 10,667,586 17,774,779 342,350 28,784,715

The 2021–22 brine shrimp harvest season will officially be closed on Jan. 27, 2022, at 5:39 p.m. MST (official sunset) in both the North and South Arms (lake and shore) pursuant to Rule R657-52-12. Harvest may continue on the salt ponds, but must still be reported to the UDWR in the same manner as during the regular season.

**Please remember to remove all debris and trash from the shore and lake resulting from harvesting activity.

Jan. 24

An error was discovered in the cumulative lake harvest reported for harvest date Jan. 15. The corrected values from Jan. 14–23 are given below, in pounds:

Harvest Date Cumulative Lake Cumulative Harvest
Jan. 14, 2022 10,264,150 27,852,833
Jan. 15, 2022 10,280,350 27,906,653
Jan. 16, 2022 10,336,109 28,004,462
Jan. 17, 2022 10,464,378 28,173,437
Jan. 18, 2022 10,604,988 28,351,387
Jan. 19, 2022 10,621,863 28,402,882
Jan. 20, 2022 10,648,863 28,457,292
Jan. 21, 2022 10,648,863 28,510,372
Jan. 22, 2022 10,648,863 28,580,432
Jan. 23, 2022 10,648,863 28,653,652
Jan. 20 10,647,863 17,466,079 342,350 28,456,292
Jan. 10 9,767,159 17,097,753 342,350 27,207,262
Dec. 21 9,181,534 16,455,093 228,080 25,864,707
Dec. 8 8,527,590 15,633,703 99,820 24,261,113
Dec. 1 7,927,234 14,519,475 96,260 22,542,969
Nov. 22 6,994,307 12,875,625 93,310 19,963,242
Nov. 16 6,643,934 11,591,625 87,310 18,322,869
Nov. 7 5,724,262 9,487,055 5,360 15,216,677
Nov. 2 4,915,363 8,413,985 0 13,329,348
Oct. 26 2,469,503 7,254,855 0 9,724,358
Feb. 23 324,260 71,400 395,660

The 2020–21 brine shrimp harvest season will officially be closed on Feb. 28, 2021, at 6:18 p.m. MST (official sunset) in the South Arm shore pursuant to Rule R657-52-12. Harvest may continue on the salt ponds, but must still be reported to the UDWR in the same manner as during the regular season.

**Please remember to remove all debris and trash from the shore and lake resulting from harvesting activity.

Feb. 1 21,600 0 21,600

Want to learn more? Listen to the DWR "Wild" podcast!

DWR Great Salt Lake Ecosystem Program Manager John Luft and DWR Conservation Officer Trevor Doman talk about the multi-million dollar industry on the Great Salt Lake that many people may not even be aware exists and how the DWR helps manage this unique resource.

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