HAB Data
Office of State Epidemiology (OSE) Dashboard
HAB Data Overview
Nevada's harmful algal bloom data is comprised of algae samples collected from public water bodies by trained state staff following the Strategic Response Plan and Standard Operating Procedures. NDEP and analytical laboriatories analyze algae samples to make health advisory determinations. NDEP releases a Weekly HAB Update with the most recent data and health advisories. Please subscribe to the Nevada HABs Listserv to receive weekly HAB updates.
Weekly HAB Update
HARMFUL ALGAL BLOOM (HAB) WEEKLY REPORT
Nevada Division of Environmental Protection
Bureau of Water Quality Planning (BWQP)
This document includes the most recent HAB data and health advisory updates for the week of 11/7/2024 through 11/14/2024.
Notification on algal toxin analysis:
NDEP HAB monitoring staff encountered an issue with the analytical equipment being used for internal algal toxin analysis. Therefore, all algal toxin samples, whether collected by NDEP or provided to NDEP staff by other state personnel, will have to be sent out for laboratory analysis. This will increase the lead time for results to approximately a week. Our equipment should be back in working order in September. This will pose a challenge as we expect to continue seeing blooms throughout the month of August. Sample collection and hand-off to NDEP staff can remain the same. Please call or email Weston Fettgather with questions: wfettgather@ndep.nv.gov; 775-687-9453.
ADVISORY REMOVALS:
- Stillwater Point Reservoir National Wildlife Refuge - the HAB Advisory have been lifted based on cyanotoxin concentrations remaining below the HAB Watch Advisory Thresholds and absence of visual indicators of HABs.
- Chimney Reservoir - the HAB Advisory have been lifted based on the absence of visual indicators.
- Eagle Valley Reservoir – the HAB Advisory have been lifted based on the absence of visual indicators.
- South Fork Reservoir – the HAB Advisory have been lifted based on the absence of visual indicators.
- Wild Horse Reservoir - the HAB Advisory have been lifted based on the absence of visual indicators.
- Virgina Lake (Reno, NV) - the HAB Advisory have been lifted based on cyanotoxin concentrations remaining below the HAB Watch Advisory Thresholds and the absence of visual indicators.
HAB Watch Advisories
New Algal Toxin Data:
- Lake Mohave (Eagle Wash Cove, Placer Cove) - the advisory has been downgraded from a HAB Warning Advisory to a HAB Watch Advisory based on cyanotoxin concentrations remaining below the HAB Watch Advisory threshold for two sampling cycles. The HAB Watch Advisory will remain in effect for a full 30 days out of an abundance of caution due to a dog death that occurred on Arizona land in October.
HAB Warning Advisories
Ongoing HAB Warning Advisories:
- Morning Star Cove at Lake Mohave - a HAB Warning Advisory will remain in effect at Morning Star Cove due to toxin concentrations exceeding the HAB Warning Threshold.
- Sheep Creek Reservoir (Duck Valley Reservation) – a HAB Warning Advisory has been issued due to cyanotoxin concentrations exceeding the HAB Warning Advisory threshold.
- Lahontan Reservoir- a HAB Warning Advisory has been issued due to cyanotoxin concentrations exceeding the HAB Warning Advisory threshold.
HAB Danger Advisories
None
The HABs monitoring team will continue regular surveillance of impacted water bodies. Sampling and analysis of affected water bodies will occur promptly as resources become available.
For more information regarding the HAB monitoring program, health advisories, exposure information, or to report a suspected HAB visit the BWQP HABs Webpage or The Office of State Epidemiology’s HABs Webpage.
Contact:
Weston Fettgather | wfettgather@ndep.nv.gov Veda Parker | vparker@ndep.nv.gov
Supervisor, Environmental Scientist Environmental Scientist
Bioassessment Branch, BWQP Bioassessment Branch, BWQP
OSE Dashboard
The Office of State Epidemiology Harmful Algae Bloom Dashboard
Report a Bloom
Report a possible bloom to the Biological Assessment and Monitoring Branch
Resources
- Strategic Response Plan (link coming soon)
- Standard Operating Procedures (link coming soon)
- Recreational Threshold Advisory Rationale (link coming soon)