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The Map Overlays panel provides a GIS visualization tool that displays publicly available data about the land, environmental features, and infrastructure in and around your project site. These overlays help inform site design decisions by revealing flood zones, wetlands, transmission infrastructure, slope characteristics, and other critical factors.

Overview

Each layer can be toggled on or off using the checkbox next to the layer name. Some layers include sub-options for labels or specific feature types. When enabled, the layer data is rendered on the map canvas using the color scheme defined in the Color Breakdown column.

Layer Reference

Layer NameLayer DescriptionColor BreakdownSource
Flood Hazard Zones (USFEMA)FEMA flood hazard zone data indicating areas with varying levels of flood risk based on annual probability of flooding. 1% Chance Annual Flood Hazard
0.2% Annual Chance Flood Hazard
Regulatory Floodway
Special Floodway
Future Conditions 1% Annual Chance
Area with Reduced Risk Due to Levee
Wetlands-Vectors (USFWS)U.S. Fish and Wildlife Service National Wetlands Inventory data showing wetland types and classifications. Freshwater - Forested and Shrub wetland
Freshwater Emergent wetland
Freshwater pond
Estuarine and Marine wetland
Riverine
Lakes
Estuarine and Marine Deepwater
Other Freshwater wetland
ParcelsProperty parcel boundaries from public records showing land ownership divisions. Parcel boundary outlines
Roadways/Railways (Census)Transportation infrastructure from U.S. Census Bureau TIGER/Line data including roads and rail lines. Interstate/State Route
State Highway
Local Street/Trails
Railway (dashed)
SurveyElevation survey data showing relative elevation compared to site average. > 20% above average elevation
> 5% above average elevation
Average elevation
> 5% below average elevation
> 20% below average elevation
KML ImportDisplay imported KML/KMZ files containing custom geographic data such as boundaries, points, or polygons.Colors and styles as defined in the imported KML file
Site BoundariesProject site boundary definitions created within the map interface. Site boundary polygons
DC FloodDC flood analysis results showing array configurations and capacity status. Includes optional Labels toggle. Standard array
Non-standard array
Out of bounds array
PCS
ConstraintsSite constraints including setbacks, exclusion zones, and user-defined restricted areas. Includes optional Labels toggle.Colors vary by constraint type (linear, area, point)
Transmission LinesElectrical transmission infrastructure data showing high-voltage power lines. Transmission Line (over 115KV)
Sub-Transmission Line (115KV or less)
Transmission Line (Unknown voltage)
SubstationsElectrical substation locations and classifications for grid interconnection planning. Generation/Receiving Station (over 115KV)
Substation (115KV or less)
Substation (Unknown voltage)
Crude Oil PipelinesCrude oil pipeline infrastructure for identifying potential setback requirements. Pipeline
Natural Gas PipelinesNatural gas pipeline infrastructure by classification for identifying potential setback requirements. Interstate
Intrastate
Gathering
EarthworkCut and fill visualization for terrain grading analysis. Includes optional Labels toggle.Cut and fill volumes visualized on the map
Slope ConstraintsSlope-based constraints highlighting areas where terrain slope direction may impact solar performance or construction feasibility. North facing slope constraint
South facing slope constraint
Slope BandsTerrain slope visualization using graduated color bands to identify areas of varying slope grade. 0% - 1% slope
1% - 2% slope
2% - 3% slope
3% - 4% slope
4% - 5% slope
5% - 6% slope
6% - 7% slope
7% - 8% slope
8% - 9% slope
9% - 10% slope
> 10% slope
Post AnalysisPost-layout analysis results showing tracker post positions relative to grading tolerances. Post below tolerance (cut)
Post above tolerance (fill)
AnnotationsUser-created text annotations and labels placed on the map for documentation purposes.User-defined text and styling