Our Navionics Web API allows Camp Narrows guests and Rainy Lake visitors to see the terrain and contours of Rainy Lake. This mapping feature includes SonarCharts™ HD bathymetry, which is a map featuring extraordinary bottom contour detail, great for increasing awareness of shallow waters and for locating fishing areas at any depth level. Integration with third party maps such as Bing (Google with limited features), enables you to add points or draw lines and polygons for a richer user experience