Lambach Lake
Scott County, Iowa9 acresView mapDirections
Iowa DNR publishes the water-quality measurements for Lambach Lake. Here is what has been measured.
- Mesotrophic
Lambach Lake in Scott County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Water clarity: 7.9 ft visibility. Phosphorus: 63 µg/L. Chlorophyll-a (algae): 5.1 µg/L. Surface area: 9 acres.
Free interactive depth-contour map of Lambach Lake, reaching a maximum surveyed depth of 16 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Iowa DNR.
Lambach Lake is a 9-acre mesotrophic lake in Scott County, Iowa. Overall water quality is improving over recent sampling years. Compared to the 4 other monitored lakes in Scott County, Lambach Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Iowa DNR, last sampled 2024-09-10. Methodology: how these readings are compared.
Swimming conditions
Readings onlyModerate algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lambach Lake is safe to swim in today is a call for the Iowa Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lambach Lake
These are the measurements Iowa DNR publishes for Lambach Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 7.9 ft. Phosphorus 63 µg/L. Chlorophyll-a 5.1 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 7.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 63µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 5.1µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 53 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lambach Lake
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Lake Details
Surface area
9 acres
No bathymetric survey has been published for Lambach Lake, so its depth is not documented here.
Stays via Stay22
Stays near Lambach Lake
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Fishing Lambach Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2024).
Water clarity
Improving4 years
Phosphorus
Improving-41.11 µg/L/yr4 years
Chlorophyll-a
Improving-51.81 µg/L/yr4 years
Reservoir Info (USACE NID)
Lambach Lake is a man-made reservoir impounded by the Northeast Lake Dam (completed 1972), built primarily for recreation on the BLACKHAWK CREEK; earth-type dam, 26 ft tall and 400 ft long.
- Surface area
- 9 ac
- Normal storage
- 75 ac-ft
- Max storage
- 160 ac-ft
- Drainage area
- 0.2 sq mi
- Hazard class
- Low
- Owner
- Scott County Conservation Board
All listed purposes: Recreation;Other.
Source: USACE National Inventory of Dams, NID ID IA00981 · Operator website · Matched by proximity (0.08 km)
Regulated Pollution Sources Nearby
5 EPA-permitted facilities operate within about 5 miles of Lambach Lake under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Lakewood Estates Mobile Home ParkDavenport · 3.4 mi away · NPDES IA0067695Recent violation
- Wild Rose Mobile Home ParkDavenport · 3.6 mi away · NPDES IA0064432Recent violation
- Qc Press WorksDavenport · 3.7 mi away · NPDES IA0060305Recent violation
- Midamerican Energy Company-Blanket PermitDes Moines · 2.5 mi away · NPDES IA0071579
- Kraft Heinz Foods CompanyDavenport · 4.3 mi away · NPDES IA0062502
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Scott County
Frequently asked questions about Lambach Lake
Where is Lambach Lake?
- Lambach Lake is a lake in Scott County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.
What is the water quality of Lambach Lake?
- Lambach Lake in Scott County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Water clarity: 7.9 ft visibility. Phosphorus: 63 µg/L. Chlorophyll-a (algae): 5.1 µg/L. Surface area: 9 acres.
Is Lambach Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lambach Lake across LakeQuality
More lakes in Iowa
Other Lakes in Iowa
Mesotrophic Lakes in Iowa
Where this data comes from
36 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Iowa DNR Surface Water Monitoring Data
21IOWA_WQX36 samples · 2023–2024
Analytical methods
- Unknown
- Phosphorus by Colorimetry
- In-Vitro Determination of Chlorophyll
- ISU modification of APHA 2130-B
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)