Lake Hayes
Current Lake SPI Condition
Moderate
Maximum Depth
32.9m
Size
2.74km²
Lake Type
Not determined
FENZ#
54190
Notes
Catchment has farmland and residential properties that have contributed to significant nutrient enrichment of the lake. Perch fish abundant and may contribute to some macrophyte and sediment disturbance. Submerged plants often coated in filamentous blue-green algae.
Lake Hayes
Results Overview March 2025
Survey Date Status LakeSPI % Native Condition % Invasive Impact %
March 2025 Moderate 32.8% 24.7% 31.9%
February 2020 Moderate 40.0% 29.3% 45.2%
December 1992 Moderate 32.0% 25.6% 65.4%
March 2025 - Condition Moderate
24.7% 31.9% 32.8% LakeSPI Index Native Index Invasive Index

Native Submerged Plants Present

Invasive Submerged Plants Present

Submerged Plant Depths

Maximum Depth (m) Submerged Aquatic Plants
Native Charophyte Meadows Invasive
3.70 3.30 2.50

Survey Notes

February 2020 - Condition Moderate
29.3% 45.2% 40.0% LakeSPI Index Native Index Invasive Index

Native Submerged Plants Present

Invasive Submerged Plants Present

Submerged Plant Depths

Maximum Depth (m) Submerged Aquatic Plants
Native Charophyte Meadows Invasive
3.40 1.80 4.60

Survey Notes

Note: Survey carried out with funding from Otago Regional Council.

December 1992 - Condition Moderate
25.6% 65.4% 32.0% LakeSPI Index Native Index Invasive Index

Native Submerged Plants Present

Invasive Submerged Plants Present

Submerged Plant Depths

Maximum Depth (m) Submerged Aquatic Plants
Native Charophyte Meadows Invasive
8.00 - 7.00

Survey Notes