Great Salt Lake Ecosystem Project Great Salt Lake Ecosystem Project
Sampling run in the Great Salt Lake

Brine shrimp sampling data

Charts, by season, showing the abundance of shrimp by life stage

Learn more about brine shrimp cysts in their various stages of development, as well as how they are harvested.

Sampling run in the Great Salt Lake

The Utah Division of Wildlife Resources monitors the populations of various age classes of brine shrimp to ensure:

  • An abundant commercial harvest
  • A sufficient food source for birds and other species
  • An adequate remaining amount to repopulate the lake each spring
The following data were taken from sampling runs conducted on the South Arm of the Great Salt Lake on the dates shown.

All presented values are per liter of lake water.

2022–23 harvest season

Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Nov. 17 98.76 0.41 0.37 0.46 0.46 0.16 0.09 0.20 Click to download
Oct. 31 86.45 1.46 0.44 0.31 0.29 0.09 0.06 0.13 Click to download
Oct. 12 149.74 0.09 0.06 0.25 0.20 0.11 0.02 0.06 Click to download
Sept. 26 274.95 0.00 0.01 0.41 0.42 0.28 0.01 0.12 Click to download

The 2022–23 harvest season will begin at noon on Saturday, October 1, 2022.

A mass die-off of eared grebes has been observed on the Great Salt Lake, and several individuals have been submitted for disease testing. Highly Pathogenic Avian Influenza (HPAI- H5N1) is present in other wild bird populations in the area and is the likely cause of the die-off. The following links provide information and safety tips for those encountering dead birds.

CDC Website:
https://www.cdc.gov/flu/avianflu/avian-flu-summary.htm

CDC Handout:
https://www.cdc.gov/flu/pdf/avianflu/Bird-Flu-Exposure-Handout.pdf

2021–22 harvest season

Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 24 19.95 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

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

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 Click to download

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 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 20 58.59 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 4 62.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 21 58.25 0.00 0.00 0.01 0.01 0.01 0.00 0.00 Click to download
Dec. 7 77.75 0.39 0.02 0.07 0.08 0.04 0.02 0.02 Click to download
Nov. 25 109.65 0.01 0.00 0.11 0.09 0.03 0.02 0.04 Click to download
Nov. 12 181.83 0.05 0.02 0.19 0.17 0.04 0.04 0.08 Click to download
Oct. 28 158.84 0.56 0.04 0.42 0.35 0.13 0.06 0.16 Click to download
Oct. 13 220.09 3.30 0.20 0.69 0.73 0.31 0.12 0.30 Click to download
Oct. 1 103.85 2.22 0.39 0.85 0.90 0.62 0.10 0.18 Click to download
Sept. 15 84.26 4.81 0.39 0.39 0.31 0.14 0.05 0.12 Click to download

The harvest season will begin at noon on Thursday, Oct. 1, 2020.

Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 20 53.24 0.01 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

The 2019–20 brine shrimp harvest season will officially be closed on Jan. 31, 2020 at 5:43 pm 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. 16 Click to download

The 2019–20 brine shrimp harvest season will officially be closed on Jan. 31, 2020 at 5:43 pm 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. 7 42.64 0.01 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 31 47.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 19 89.68 0.13 0.00 0.01 0.01 0.01 0.00 0.00 Click to download
Dec. 9 104.74 0.36 0.02 0.02 0.03 0.02 0.00 0.01 Click to download
Dec. 2 72.56 0.26 0.04 0.04 0.03 0.01 0.01 0.01 Click to download
Nov. 18 61.26 1.14 0.32 0.19 0.22 0.06 0.05 0.11 Click to download
Nov. 12 129.49 1.48 0.26 0.32 0.27 0.04 0.07 0.16 Click to download
Nov. 6 99.55 1.20 0.35 0.37 0.37 0.07 0.10 0.20 Click to download
Oct. 31 144.72 2.01 0.21 0.35 0.35 0.04 0.06 0.24 Click to download
Oct. 16 118.19 2.88 0.45 0.47 0.37 0.06 0.05 0.26 Click to download
Oct. 7 107.08 1.42 0.12 0.34 0.34 0.05 0.05 0.24 Click to download
Sept. 23 153.11 1.70 0.19 0.32 0.27 0.08 0.03 0.16 Click to download
Aug. 13 67.93 4.38 0.08 0.53 0.44 0.22 0.07 0.15 Click to download
Feb. 25 Click to download

The emergency amendment extension of the 2018–19 brine shrimp harvest season will officially be closed on Feb. 28, 2019 at 6:17 pm 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.

Feb. 8 77.99 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 29 50.85 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

EXTEND the Brine Shrimp season to close on February 28, 2019 or until Utah Division of Wildlife Resources personnel determine numbers have reached adequate levels to warrant a closure.

Please continue to provide daily reports until the closure.

Jan. 24 42.16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 14 41.32 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 8 79.22 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 2 79.82 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 18 46.21 0.02 0.00 0.01 0.01 0.01 0.00 0.00 Click to download
Dec. 10 64.19 0.23 0.01 0.04 0.05 0.03 0.01 0.01 Click to download
Dec. 5 107.65 0.39 0.01 0.07 0.05 0.03 0.01 0.01 Click to download
Nov. 19 87.33 1.31 0.14 0.23 0.25 0.10 0.06 0.09 Click to download
Nov. 13 106.34 1.52 0.19 0.29 0.39 0.20 0.05 0.13 Click to download
Nov. 7 66.46 1.38 0.28 0.18 0.20 0.08 0.05 0.06 Click to download
Oct. 22 81.91 1.80 0.23 0.32 0.35 0.17 0.05 0.13 Click to download
Oct. 15 153.43 2.12 0.24 0.29 0.32 0.17 0.05 0.11 Click to download
Oct. 1 108.05 3.01 0.28 0.22 0.21 0.11 0.03 0.08 Click to download
Sept. 26 108.39 2.71 0.22 0.34 0.25 0.08 0.05 0.12 Click to download
Aug. 23 79.62 2.38 0.34 0.36 0.07 0.07 0.21 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 16 8.13 0.02 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

The 2017–18 brine shrimp harvest season will officially be closed on Jan. 18, 2018 at 5:28 p.m. MST (official sunset) pursuant to Rule R657-52-12. Harvest may continue on the North Arm (lake and shore) until January 31, 2018 at 5:44 pm MST (official sunset) but must still be reported to the UDWR in the same manner as during the regular season. 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. 11 15.39 0.04 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

Accordingly, the first seven-day timeout of this harvest season pursuant to Rule R657-52-12(1)(c). The brine shrimp harvesting season in the South Arm (both lake and beach) was suspended on Thursday, January 11, 2018 at 5:20 p.m. MST (official sunset). All other aspects of the rule remain in effect. Harvest will be permitted on the North Arm of the lake during this closure period (both lake and beach).

During the closure period, we will continue to sample and determine if there are sufficient quantities of cysts to resume harvest. If the season resumes, it will open at noon on Friday, January 19, 2018. The decision will be based upon resource conservation. We will be in contact with the harvesting companies toward the end of the closure period regarding our decision.

Daily harvest reports during the timeout will not be required except for harvest occurring in the salt ponds and on the North Arm. Daily harvest reports will still be required for January 11. Weekly harvest reports will also be required at the normal time.

Jan. 8 9.07 0.02 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

Accordingly, we are exercising the first seven day timeout of this harvest season pursuant to Rule R657-52-12(1)(c). The brine shrimp harvesting season in the South Arm (both lake and beach) will suspend on Thursday, January 11, 2018 at 5:20 p.m. MST (official sunset). All other aspects of the rule will remain in effect. Harvest will be permitted on the North Arm of the lake during this closure period (both lake and beach).

During the closure period, we will continue to sample and determine if there are sufficient quantities of cysts to resume harvest. If the season resumes, it will open at noon on Friday, January 19, 2018. The decision will be based upon resource conservation. We will be in contact with the harvesting companies toward the end of the closure period regarding our decision.

Daily harvest reports during the timeout will not be required except for harvest occurring in the salt ponds and on the North Arm. Daily harvest reports will still be required for January 11. Weekly harvest reports will also be required at the normal time.

Jan. 2 22.70 0.13 0.00 0.01 0.01 0.00 0.00 0.00 Click to download
Dec. 27 11.23 0.16 0.00 0.02 0.01 0.00 0.00 0.00 Click to download
Dec. 18 44.36 0.89 0.13 0.05 0.04 0.01 0.01 0.02 Click to download
Dec. 11 23.91 1.03 0.30 0.08 0.09 0.02 0.03 0.03 Click to download
Dec. 5 40.63 0.94 0.37 0.14 0.08 0.01 0.03 0.04 Click to download
Nov. 28 50.91 0.96 0.29 0.19 0.14 0.03 0.02 0.09 Click to download
Nov. 20 57.55 1.25 0.24 0.26 0.22 0.06 0.07 0.09 Click to download
Nov. 13 68.65 1.24 0.20 0.51 0.36 0.05 0.10 0.21 Click to download
Nov. 6 98.85 0.76 0.04 0.47 0.34 0.10 0.07 0.16 Click to download
Oct. 31 92.57 0.62 0.01 0.44 0.38 0.09 0.08 0.21 Click to download
Oct. 23 106.27 0.35 0.02 0.37 0.36 0.12 0.04 0.21 Click to download
Oct. 16 59.93 0.20 0.02 0.35 0.29 0.06 0.09 0.14 Click to download
Oct. 5 83.69 0.28 0.05 0.54 0.45 0.10 0.15 0.20 Click to download
Sept. 25 61.53 1.22 0.10 0.55 0.49 0.11 0.12 0.26 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 26 10.71 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 18 4.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 12 35.48 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 6 63.30 0.02 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 5 Click to download

Based on recent sampling results, harvest on the South Arm Lake will resume at noon on Saturday, January 7, 2017, pursuant to Rule R657-52. We will continue to sample and determine if there are sufficient quantities of cysts to maintain harvest.

Jan. 3 19.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 27 12.99 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

Accordingly, we are exercising the first seven day timeout of this harvest season pursuant to Rule R657-52-12(1)(c). The brine shrimp harvesting season on the South Arm Lake (lake only) will suspend Friday, December 30, 2016 at 5:09 p.m. MST (official sunset). All other aspects of the rule will remain in effect. Harvest will be permitted on the South Arm Beach as well as the North Arm (both lake and beach) during this closure period.

During the closure period, we will continue to sample and determine if there are sufficient quantities of cysts to resume harvest. If the season resumes, it will open at noon on Saturday, January 7, 2017. The decision will be based upon resource conservation. We will be in contact with the harvesting companies toward the end of the closure period regarding our decision.

Daily harvest reports during the timeout will not be required for the South Arm Lake. However, reports for harvest occurring in the salt ponds, on the South Arm beach, and on the North Arm will be required as normal. Daily harvest reports will still be required for the South Arm Lake for December 30. Weekly harvest reports will also be required at the normal time.

Dec. 19 38.56 0.06 0.04 0.03 0.02 0.02 0.00 0.00 Click to download
Dec. 6 67.86 1.23 1.26 0.15 0.13 0.09 0.00 0.04 Click to download
Nov. 22 90.99 3.94 1.95 0.28 0.21 0.10 0.02 0.09 Click to download
Nov. 14 37.34 4.19 2.70 0.34 0.22 0.10 0.03 0.10 Click to download
Nov. 7 38.88 2.87 1.70 0.52 0.34 0.12 0.05 0.16 Click to download
Nov. 2 124.29 2.86 0.94 0.34 0.25 0.06 0.03 0.16 Click to download
Oct. 25 87.16 0.96 0.11 0.58 0.40 0.13 0.03 0.25 Click to download
Oct. 19 116.17 0.75 0.14 0.52 0.34 0.18 0.02 0.14 Click to download
Oct. 12 122.29 0.54 0.18 0.40 0.32 0.11 0.01 0.20 Click to download
Oct. 6 73.97 0.72 0.14 0.54 0.52 0.25 0.02 0.25 Click to download
Sept. 26 46.58 1.96 0.43 0.72 0.60 0.34 0.03 0.24 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 26 36.22 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

The 2015–16 brine shrimp harvest season will officially be closed on Jan. 31, 2016 at 5:43 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. 21 33.25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 19 27.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 11 23.34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 4 53.72 0.04 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 17 157.28 0.10 0.00 0.01 0.01 0.01 0.00 0.00 Click to download
Dec. 8 50.60 0.01 0.00 0.03 0.04 0.04 0.00 0.00 Click to download
Dec. 1 88.82 0.07 0.01 0.15 0.13 0.11 0.00 0.02 Click to download
Nov. 23 46.61 0.28 0.05 0.33 0.25 0.19 0.01 0.05 Click to download
Nov. 17 178.17 0.96 0.08 0.57 0.49 0.36 0.02 0.11 Click to download
Nov. 12 94.62 0.73 0.10 0.49 0.42 0.31 0.01 0.09 Click to download
Oct. 26 89.89 1.91 0.44 0.69 0.56 0.45 0.01 0.10 Click to download
Oct. 22 80.18 3.58 0.78 1.04 0.87 0.70 0.02 0.15 Click to download
Oct. 13 48.47 5.71 2.14 0.77 0.69 0.47 0.02 0.19
Oct. 5 64.96 8.13 1.98 0.66 0.52 0.35 0.04 0.14 Click to download
Sept. 29 54.48 4.99 2.59 0.34 0.26 0.15 0.02 0.08 Click to download
Sept. 23 56.77 4.04 1.34 0.56 0.29 0.16 0.03 0.09 Click to download
Sept. 17 143.75 2.90 1.08 0.72 0.43 0.20 0.07 0.16 Click to download
Sept. 9 95.98 7.84 0.72 0.86 0.61 0.27 0.14 0.20 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 20 19.78 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

The 2014–15 brine shrimp harvest season will officially be closed on Jan. 24, 2015 at 5:35 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. 15 21.87 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 14 23.73 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 5 27.75 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 29 65.57 0.05 0.08 0.04 0.04 0.04 0.00 0.00 Click to download
Dec. 23 137.70 0.20 0.50 0.08 0.06 0.06 0.00 0.00 Click to download
Dec. 15 71.53 0.38 0.54 0.13 0.07 0.07 0.00 0.00 Click to download
Dec. 8 10.30 0.84 1.30 0.15 0.16 0.16 0.00 0.00 Click to download
Nov. 26 56.27 1.03 2.80 0.34 0.13 0.12 0.00 0.00 Click to download
Nov. 18 49.17 2.25 3.78 0.34 0.23 0.19 0.02 0.02 Click to download
Nov. 4 101.53 2.25 1.47 0.28 0.17 0.07 0.03 0.06 Click to download
Oct. 28 75.96 1.68 0.99 0.26 0.09 0.03 0.02 0.05 Click to download
Oct. 20 61.57 0.41 0.96 0.32 0.20 0.07 0.04 0.08 Click to download
Oct. 14 117.62 0.73 0.39 0.42 0.21 0.07 0.03 0.11 Click to download
Oct. 6 107.34 1.19 0.15 0.58 0.38 0.15 0.09 0.14 Click to download
Oct. 2 132.32 1.88 0.09 0.57 0.33 0.16 0.05 0.13 Click to download
Sept. 22 135.81 7.61 0.48 0.94 0.71 0.43 0.11 0.17 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 28 38.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

The 2013–14 brine shrimp harvest season will officially be closed on January 31, 2014 at 5:44 pm 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. 21 32.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 14 34.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 6 58.89 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 30 34.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 18 34.11 0.01 0.00 0.01 0.01 0.00 0.00 0.00 Click to download
Dec. 10 108.51 0.50 0.04 0.12 0.09 0.04 0.03 0.02 Click to download
Nov. 25 86.72 1.45 0.15 0.32 0.19 0.09 0.04 0.06 Click to download
Nov. 18 98.27 1.93 0.18 0.39 0.29 0.12 0.06 0.11 Click to download
Nov. 12 97.27 1.76 0.14 0.41 0.31 0.11 0.06 0.14 Click to download
Nov. 4 176.16 1.68 0.12 0.35 0.35 0.14 0.04 0.17 Click to download
Oct. 30 130.84 1.94 0.14 0.37 0.63 0.19 0.04 0.40 Click to download
Oct. 21 197.59 1.77 0.26 0.47 0.37 0.17 0.02 0.18 Click to download
Oct. 16 201.30 3.28 0.19 0.67 0.47 0.19 0.03 0.26 Click to download
Oct. 7 94.82 4.38 0.36 0.53 0.55 0.22 0.06 0.27 Click to download
Oct. 1 146.67 6.98 0.48 0.73 0.55 0.23 0.09 0.23 Click to download
Sept. 16 89.31 5.86 0.71 0.34 0.21 0.08 0.05 0.08 Click to download
Feb. 25 113.36 0.01 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Feb. 18 37.76 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Feb. 12 80.78 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Feb. 4 40.92 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 31 52.36 0.03 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 15 71.45 0.04 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 7 40.19 0.10 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 2 77.88 0.15 0.01 0.01 0.00 0.00 0.00 0.00 Click to download
Dec. 20 145.32 0.72 0.06 0.02 0.01 0.01 0.00 0.00 Click to download
Dec. 13 127.49 1.09 0.18 0.06 0.04 0.01 0.01 0.02 Click to download
Dec. 3 145.05 1.79 0.27 0.12 0.13 0.06 0.02 0.05 Click to download
Nov. 29 119.41 1.44 0.25 0.16 0.18 0.07 0.01 0.10 Click to download
Nov. 19 86.11 2.98 0.29 0.26 0.29 0.09 0.04 0.17 Click to download
Nov. 13 92.88 1.39 0.17 0.28 0.24 0.07 0.02 0.16 Click to download
Nov. 5 64.81 1.51 0.12 0.20 0.16 0.05 0.01 0.09 Click to download
Oct. 29 88.29 1.13 0.20 0.20 0.24 0.09 0.03 0.12 Click to download
Oct. 15 84.95 1.18 0.18 0.35 0.29 0.13 0.02 0.14 Click to download
Oct. 9 112.25 1.17 0.16 0.29 0.24 0.09 0.03 0.11 Click to download
Oct. 2 84.29 2.20 0.47 0.29 0.27 0.07 0.01 0.18 Click to download
Sept. 26 87.39 3.24 0.29 0.30 0.31 0.12 0.04 0.15 Click to download
Sept. 19 55.64 1.61 0.21 0.17 0.14 0.04 0.01 0.09 Click to download
Sept. 12 107.60 2.68 0.28 0.42 0.42 0.13 0.09 0.21 Click to download
Sept. 4 75.33 3.95 0.10 0.36 0.33 0.13 0.05 0.15 Click to download
Aug. 20 50.49 5.08 0.96 0.60 0.87 0.59 0.11 0.17 Click to download

Provided there are sufficient cyst numbers, the harvest season will begin at noon on Monday, October 1, 2012.

Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Jan. 23 33.77 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

As a result, the harvest season will resume at noon on Friday, Jan. 27, 2012.

Jan. 13 21.30 0.03 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

Accordingly, we are exercising the second seven day timeout of this harvest season pursuant to Rule R657-52-12(1)(c). The brine shrimp harvesting season in the South Arm (both lake and beach) will continue to be suspended through Thursday, Jan. 26, 2012. All other aspects of the rule will remain in effect.

During the closure period, we will continue to sample as safe weather allows and determine if there are sufficient quantities of cysts to resume harvest. If the season resumes, it will open at noon on Friday, Jan. 27, 2012. The decision will be based upon resource conservation. We will be in contact with the harvesting companies toward the end of the closure period regarding our decision.

Daily harvest reports during the timeout will be required for harvest occurring in the salt ponds and on the North Arm. Weekly harvest reports will also be required for harvest occurring during this time.

Jan. 12 21.30 0.03 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 9 13.90 0.03 0.00 0.00 0.00 0.00 0.00 0.00 Click to download

Accordingly, we are exercising the first seven day timeout of this harvest season pursuant to Rule R657-52-12(1)(c). The brine shrimp harvesting season in the South Arm (both lake and beach) will suspend Thursday, Jan. 12, 2012 at 5:22 p.m. MST (official sunset). All other aspects of the rule will remain in effect. Harvest will be permitted on the North Arm of the lake during this closure period (both lake and beach).

During the closure period, we will continue to sample and determine if there are sufficient quantities of cysts to resume harvest. If the season resumes, it will open at noon on Friday, Jan. 20, 2012. The decision will be based upon resource conservation. We will be in contact with the harvesting companies toward the end of the closure period regarding our decision.

Daily harvest reports during the timeout will not be required except for harvest occurring in the salt ponds and on the North Arm. Daily harvest reports will still be required for Jan. 12. Weekly harvest reports will also be required at the normal time.

Jan. 4 20.30 0.07 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Jan. 3 21.73 0.07 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 29 14.73 0.07 0.00 0.00 0.00 0.00 0.00 0.00 Click to download
Dec. 27 27.07 0.15 0.00 0.10 0.10 0.00 0.00 0.00 Click to download

The seven day timeout afforded by Rule R657-52-12(1)(c) will not be called at this time. The harvest season will therefore be allowed to continue without interruption.

Dec. 19 19.37 0.57 0.00 0.02 0.02 0.01 0.01 0.00 Click to download

The seven day timeout afforded by Rule R657-52-12(1)(c) will not be called at this time. The harvest season will therefore be allowed to continue without interruption.

Dec. 12 40.66 0.97 0.06 0.05 0.06 0.02 0.02 0.02 Click to download
Dec. 6 69.13 1.76 0.20 0.08 0.08 0.03 0.01 0.04 Click to download
Nov. 28 43.75 2.67 0.51 0.16 0.16 0.06 0.04 0.07 Click to download
Nov. 21 78.60 3.10 0.62 0.29 0.24 0.07 0.05 0.12 Click to download
Nov. 14 91.89 2.60 0.61 0.29 0.28 0.10 0.06 0.12 Click to download
Nov. 8 99.97 2.06 0.49 0.30 0.31 0.10 0.06 0.15 Click to download
Oct. 31 49.37 1.53 0.40 0.31 0.35 0.12 0.05 0.18 Click to download
Oct. 27 96.65 1.13 0.37 0.35 0.35 0.14 0.04 0.17 Click to download
Oct. 18 68.17 1.89 0.20 0.51 0.54 0.30 0.05 0.19
Oct. 10 65.47 2.24 0.22 0.55 0.58 0.36 0.03 0.19 Click to download
Sept. 27 31.66 6.23 1.36 0.58 0.73 0.55 0.07 0.12 Click to download
Sept. 19 28.64 6.32 0.74 0.37 0.36 0.15 0.07 0.14 Click to download
Sept. 13 41.46 3.28 0.63 0.32 0.33 0.12 0.06 0.16 Click to download
Sept. 8 41.69 2.43 0.40 0.34 0.35 0.16 0.05 0.14 Click to download
Aug. 29 45.56 19.23 0.52 0.45 0.39 0.11 0.11 0.17 Click to download
Shrimp collection categories
Date Cysts Nauplii Juveniles Males Total
Females
Females Females with
Eggs/Naups
Females
with Cysts
Download
Dec. 13 21.91 0.00 0.00 0.02 0.02 0.01 0.00 0.00 Click to download
Dec. 7 27.39 0.00 0.00 0.02 0.02 0.01 0.00 0.00 Click to download
Dec. 2 28.01 0.00 0.00 0.03 0.03 0.02 0.01 0.01 Click to download
Nov. 17 128.17 0.00 0.00 0.20 0.19 0.10 0.01 0.07 Click to download
Nov. 12 105.15 0.00 0.01 0.26 0.25 0.14 0.02 0.09 Click to download
Nov. 2 55.15 0.00 0.03 0.26 0.31 0.21 0.01 0.09 Click to download
Oct. 28 153.50 0.00 0.02 0.30 0.32 0.23 0.01 0.09 Click to download
Oct. 19 176.10 0.01 0.17 0.62 0.63 0.48 0.02 0.13 Click to download
Oct. 11 88.71 0.48 0.23 0.84 0.69 0.63 0.01 0.05 Click to download
Sept. 27 106.03 11.10 1.84 1.62 1.25 0.79 0.14 0.32 Click to download
Sept. 23 165.98 19.57 2.34 2.24 1.66 0.88 0.24 0.54 Click to download
Sept. 13 42.67 12.42 1.63 0.68 0.62 0.32 0.11 0.19 Click to download
Sept. 7 88.69 5.48 0.24 0.38 0.35 0.12 0.05 0.18 Click to download
Aug. 31 50.12 1.30 0.16 0.38 0.32 0.09 0.07 0.16 Click to download

"Monitoring the brine shrimp population"

For more about how the DWR conducts sampling runs along the Great Salt Lake, check out the following video* by the Genetic Science Learning Center at the University of Utah.

* Genetic Science Learning Center. (2014, October 1) Monitoring and Studying Great Salt Lake. Retrieved March 01, 2021, from https://learn.genetics.utah.edu/content/gsl/monitor

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