diff --git a/web/src/gis/globe/ArcgisElevationCoverage.js b/web/src/gis/globe/ArcgisElevationCoverage.js
index 9f1f7f7d..82428b62 100644
--- a/web/src/gis/globe/ArcgisElevationCoverage.js
+++ b/web/src/gis/globe/ArcgisElevationCoverage.js
@@ -33,13 +33,14 @@ import ArcgisElevationWorker from 'worker!./ArcgisElevationWorker.js';
  * @classdesc Provides elevations for Earth. Elevations are drawn from the NASA WorldWind elevation service.
  */
 function ArcgisElevationCoverage() {
+    // see: http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer
     TiledElevationCoverage.call(this, {
         coverageSector: new Sector(-WWMath.MAX_LAT, WWMath.MAX_LAT, -180, 180),
-        resolution: 360 / 256,
+        resolution: 360 / 2 ** 16 / 256,
         retrievalImageFormat: "application/bil16",
-        minElevation: -11000,
-        maxElevation: 8850,
-        urlBuilder: new WmsUrlBuilder("https://worldwind26.arc.nasa.gov/elev", "aster_v2", "", "1.3.0")
+        minElevation: -450,
+        maxElevation: 8700,
+        urlBuilder: new WmsUrlBuilder("http://localhost:2020/api/Map/Elev", "WorldElevation3D", "", "1.3.0")
     });
 
     this.displayName = "Arcgis Elevation Coverage";
@@ -59,7 +60,7 @@ ArcgisElevationCoverage.prototype.retrieveTileImage = function (tile) {
         let z = 360 / (tile.sector.maxLongitude - tile.sector.minLongitude);
         let x = (180 + tile.sector.minLongitude) / 360 * Math.pow(2, z);
 
-        if(Math.abs(tile.sector.minLatitude) > 85.01) {
+        if (Math.abs(tile.sector.minLatitude) > 85.01) {
             return;
         }
 
diff --git a/web/src/gis/globe/TiledElevationCoverage.js b/web/src/gis/globe/TiledElevationCoverage.js
index 8220eace..ae2dcc7e 100644
--- a/web/src/gis/globe/TiledElevationCoverage.js
+++ b/web/src/gis/globe/TiledElevationCoverage.js
@@ -69,7 +69,7 @@ function TiledElevationCoverage(config) {
 
     ElevationCoverage.call(this, config.resolution);
 
-    var firstLevelDelta = 45,
+    var firstLevelDelta = 360,
         tileWidth = 256,
         lastLevel = LevelSet.numLevelsForResolution(firstLevelDelta / tileWidth, config.resolution),
         numLevels = Math.ceil(lastLevel); // match or exceed the specified resolution
@@ -182,7 +182,6 @@ function TiledElevationCoverage(config) {
      */
     // this.urlBuilder = new UrlBuilder() || null;
     this.urlBuilder = config.urlBuilder || null;
-    this.urlBuilder.serviceAddress = 'http://localhost:2020/api/Map/Elev';
 }
 
 TiledElevationCoverage.prototype = Object.create(ElevationCoverage.prototype);
@@ -333,7 +332,7 @@ TiledElevationCoverage.prototype.areaElevationsForGrid = function (sector, numLa
             if (isNaN(result[resultIndex])) {
                 if (this.coverageSector.containsLocation(lat, lon)) { // ignore locations outside of the model
                     s = (lon + 180) / 360;
-                    t = (lat + 90) / 180;
+                    t = (lat + 180) / 360;
                     this.areaElevationForCoord(s, t, level.levelNumber, result, resultIndex);
                 }
             }
@@ -359,7 +358,7 @@ TiledElevationCoverage.prototype.areaElevationForCoord = function (s, t, levelNu
     for (var i = levelNumber; i >= 0; i--) {
         level = this.levels.level(i);
         levelWidth = Math.round(level.tileWidth * 360 / level.tileDelta.longitude);
-        levelHeight = Math.round(level.tileHeight * 180 / level.tileDelta.latitude);
+        levelHeight = Math.round(level.tileHeight * 360 / level.tileDelta.latitude);
         tMin = 1 / (2 * levelHeight);
         tMax = 1 - tMin;
         vMin = 0;