0.76

11-15-2024

41.7 degrees F

0.61

11-08-2024

48.9 Degrees F

0.66

11-01-2024

48.2 degrees

0.54

10-25-2024

49.8 degrees

0.59

10-22-2024

50.7 degrees F. Algae restriction commencing 10/18/24. Test results= 262 (one of the highest ever) (acceptable limit= 8)

0.60

10-11-2024

Surface water temp= 55.9 F Algae restriction lifted 10/3/24

0.68

09-30-2024

Surface Water temperature= 65F. No precipitation this week since last measurement

0.78

09-19-2024

Weather continues to cool, particularly at night. (50F), with daytime highs at 70F (max). Surface water temperature is 63F. No precipitation since last measurement. Toxic Algae restrictions lifted 16 September.

0.82

09-17-2024

Measurement follows a period of low to medium precipitation. Cool nights (60F), warmer days (70F).

0.85

09-10-2024

Measurement submitted after a continued, period of no precipitation. The surface water temperature is 71F. Air temperature has varied from 60-80F. The swimming ban remains in effect after successive tests indicate high levels of toxic algae.

0.95

09-02-2024

Measurement follows a period of hot days (90+F) and cooler (50-60F) nights, with no precipitation. Latest algae test was satisfactory, awaiting results of the second required test before rescission of lake restrictions. BG algae is not visible as surface scum.

1.05

08-26-2024

Measurement follows a period of light rain. Surface water temp = 64F. Air temperatures ranging from 50 - 70F. The lake water appears very clear but the algae restrictions on swimming remain in effect.

1.07

08-22-2024

Surface water temp = 69F. Measurement follows continuation of cloudy skies, light precipitation and air temps 65-75F.

1.10

08-15-2024

Surface water temp = 73F. Measurement follows a continued period of no precipitation and air temps 65-75F.

1.16

08-12-2024

Continued period of no precipitation. The weather is cooler 60-70F.

1.26

08-06-2024

Measurement follows a period of cooler weather (75-85F) and no precipitation. Surface water temperature 72F.

1.37

07-30-2024

Measurement follows period of very light precipitation, slightly cooler weather (60-70F).

1.44

07-25-2024

Measurement follows a period of cooler days (72-76F) and nights (50-65F) but sustained dry weather. Surface water temperature 72F.

1.51

07-22-2024

Measurement follows an extended period of 80F+ air temperatures and sunny days. Today the air temperature cooled to 57F (night), but no precipitation, and overcast skies. Surface water temperature is 74F.

1.64

07-17-2024

Surface water temperature 81.5F. Measurement follows continued period of no precipitation and hot sunny days, Air temp today is 82F.

1.75

07-11-2024

Surface water temp 76F. Follows extended period of no precipitation.

1.80

07-09-2024

Surface water temp 79F. Measurement follows a prolonged, continued hot spell with air temps 90-100F and no precipitation.

1.90

07-04-2024

Measurement follows an extended period of increasing temperatures (80's) and zero precipitation.

1.97

06-30-2024

Surface water temp 79F. Reading follows a period of little precipitation.

2.10

06-20-2024

Hotter weather since last measurement. High of 84F predicted today. Surface water temperature 74f.

2.11

06-19-2024

Measurement follows a period of cool weather (50-60 degrees) overcast with intermittent periods of precipitation.

2.20

06-10-2024

Measurement follows a period of warm (60-80F) sunny weather. Water surface temp 69F.

2.28

06-04-2024

Measurement follows a period of intense rain showers and cool weather. Lake Surface Temperature = 63F

2.25

05-31-2024

Measurement follows periodic rain showers and cool weather (45-65F).

2.30

05-20-2024

Surface temperature is 56F, following rather cool days (60) and nights (45). Slight precipitation since last measurement.

2.43

05-13-2024

Measurement follows a period of no precipitation since last measurement. After 3 days of 80-85F air temperature, the weather has returned to high of 65F. The water temperature is now 63F.

2.49

05-09-2024

2.44

04-29-2024

Surface Temp = 53.2F

2.45

04-19-2024

Surface water temperature 49F.

2.50

04-09-2024

2.56

04-05-2024

Surface water continues to spill over the dam which is at approximate elevation of 2.4ft.

2.46

03-11-2024

Measurement follows an extended period of rain. The lake is draining over the dam which is at a level of 2.40 ft.

2.38

03-03-2024

Lake surface level is just beginning to spill over the weir. Water temperature on 24 Feb was 50.5F

2.17

02-24-2024

Temperature data is unavailable.

1.98

02-05-2024

Measurement follows a few days without rain. Freezing temp at night, 40F during the day. The lake surface temperature is 50F. The snow level at Mt Rainier is now 7,000 ft. At Paradise (5400ft) th snow was obviously melting, filling Alder Lake to capacity.

1.93

01-29-2024

Record-breaking high winter temperatures (61F) have caused local flooding as mountain snow melts into the rivers. The freeze level is 7500ft at Mt Ra

1.89

01-28-2024

Measurement follows several days of periodic rain showers. Lake surface temp = 45F. Weather is unseasonably warm achieving 60F.

1.73

01-22-2024

Measurement follows several days of significant precipitation. Mountains have received increases in snow pack. Surface temperature since the last report is 43F. The ice on the lake has thawed.

1.56

01-15-2024

Measurement taken following 4 days of subfreezing cold, 12-30F. Both lakes surfaces are frozen. Very little precipitation since last measurement.

1.54

01-11-2024

Measurement follows periods of heavy precipitation. Air temperature 37 -40F.

1.31

01-02-2024

Measurement follows several days of no precipitation. Air temperature has been between 30 - 50F.

1.30

12-26-2023

Measurement follows period of moderate rain. Surface Temperature 40F. Night air temperatures below freezing. Daytime highs reach 50F.

1.27

12-21-2023

Measurement follows period of very light rain, heavy fog. Surface temperature 42F. Slight amount green algae scum on surface of water on small lake, along littorals. Air temp 40-51F.

1.26

12-19-2023

Measurement follows periods of light rain. Surface water temp = 42F. Air temp 45F.

1.21

12-11-2023

Measurement follows several days of persistent rain and warmer temperatures causing mountain snow melt. Flood conditions are prevalent in the Th County Area. 125 ducks counted at the LLCC HOA Park in the western basin. Surface Temperature is 44F.

1.03

12-06-2023

Continued periods of heavy rain. Record warm temperatures (60F) have caused snow melt in addition to rain. Locally there are many flood alerts including Chehalis and Skookumchuck rivers.

0.70

12-04-2023

Measurement follows a period of intense rain and warmer air temperatures (54F). The local area is under flood watch owing to these conditions. 95 geese observed at HOA park on the small lake. No algae observed.

0.60

11-27-2023

Measurement follows a period of very little precipitation. Air temperatures vary from 27-50F.

0.65

11-23-2023

Measurement follows an extended period of light to no precipitation, air temperatures 27-50F.