Silver Lake Max Depth is a productive, nutrient-rich eutrophic lake in Dickinson County, Iowa. Water quality is graded F based on 2 sampling years through 2024. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 3 public boat landings. Compared to the 7 other monitored lakes in Dickinson County, Silver Lake Max Depth ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Iowa DNR, last sampled 2024-09-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 2.7 ft of visibility. Chlorophyll-a: 38.3 µg/L. Trophic State Index: 65.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.7 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 38.3 µg/L | F |
| Trophic State Index (TSI) | 65 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Silver Lake Max Depth
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Top-rated places to stay near Silver Lake Max Depth
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Fishing Silver Lake Max Depth
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.175 m/yr | 5 |
| Chlorophyll-a | ↑ Improving | -11.04 µg/L/yr | 5 |
Recreation & Access
Water Temperature
Silver Lake Max Depth averages about 73°F at the surface in summer, usually warmest in Jul (about 80°F) and coldest in Jun (about 68°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 26 field readings (2010–2023) via the EPA Water Quality Portal. See the full Silver Lake Max Depth water temperature breakdown →
Location
County Ranking
Ranked #7 of 8 lakes in Dickinson County
Cleaner Lakes Within 30 Miles
Silver Lake Max Depth holds Grade F. 4 nearby lakes hold higher grades.
- AWest Okoboji LakeDickinson County · 9.8 mi · Two grade letters higher (F → A)
- CUpper Gar LakeDickinson County · 11.9 mi · Two grade letters higher (F → C)
- DEast Okoboji LakeDickinson County · 11.8 mi · Higher grade (F → D)
- DLake MinnewashtaDickinson County · 12 mi · Higher grade (F → D)
Nearby Lakes in Dickinson County
Explore Silver Lake Max Depth across LakeGrade
Species activity outlook by water temperature and season
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High nutrients, frequent algae, reduced clarity
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Other Grade F Lakes in Iowa
Eutrophic Lakes in Iowa
More records, surveys & data sources
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2024-09-09
Monitoring stations: 1