mean elevation difference between RTKGPS and lid2008 is -0.497ft stddev is 0.26feet 2008 r.volume vAmhwlid2008_6ftmask clum=volsections centr=vAmhwlid2008_6ftmask_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.26 5025 19502 3030863.19 753183.47 180867.88 2 4.78 249680 52278 3031451.16 752661.54 8986884.06 3 3.83 201444 52533 3031907.13 751869.64 7250696.38 4 2.88 145458 50581 3032381.11 751095.74 5235558.24 5 2.10 100866 47944 3032903.08 750315.84 3630531.27 6 1.99 94250 47409 3033359.06 749547.94 3392397.56 7 1.12 53489 47688 3033803.04 748762.03 1925262.10 8 0.86 39732 46424 3034277.01 747982.13 1430098.04 9 0.60 28756 48306 3034768.99 747208.23 1035032.19 10 1.28 64899 50562 3035236.96 746422.33 2335949.17 11 1.45 70285 48386 3035656.94 745618.43 2529810.74 12 1.43 70478 49451 3036028.92 744808.54 2536757.51 Total Volume = 40469845.16 Just for comparison - this is after 0.497 was subtracted from the DEM - I am nut sure that it is right because the road was re-paved and it is probably now at higher elevation than it was in 2006. But it shows that a systemic error that is within the data accuracy can have quite an impact on volumes. Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.23 4450 19502 3030863.19 753183.47 160171.56 2 4.58 239307 52278 3031451.16 752661.54 8613522.37 3 3.67 192594 52533 3031907.13 751869.64 6932152.95 4 2.73 138177 50581 3032381.11 751095.74 4973488.78 5 1.98 94902 47944 3032903.08 750315.84 3415865.39 6 1.90 89975 47409 3033359.06 749547.94 3238524.89 7 1.06 50333 47688 3033803.04 748762.03 1811666.28 8 0.81 37604 46424 3034277.01 747982.13 1353503.64 9 0.55 26504 48306 3034768.99 747208.23 953974.59 10 1.21 61131 50562 3035236.96 746422.33 2200325.26 11 1.36 65749 48386 3035656.94 745618.43 2366543.74 12 1.34 66076 49451 3036028.92 744808.54 2378313.65 Total Volume = 38398053.08 2005 r.volume vAmhwres6fAllCrtk2005 clum=volsections centr=vAmhwres6fAllCrtk2005_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.40 7751 19502 3030863.19 753183.47 278986.46 2 4.82 251976 52278 3031451.16 752661.54 9069525.39 3 4.03 211544 52533 3031907.13 751869.64 7614231.83 4 3.14 158959 50581 3032381.11 751095.74 5721507.95 5 2.28 109308 47944 3032903.08 750315.84 3934389.31 6 2.14 101618 47409 3033359.06 749547.94 3657598.47 7 1.41 67359 47688 3033803.04 748762.03 2424493.45 8 0.90 41818 46424 3034277.01 747982.13 1505180.70 9 0.75 36034 48306 3034768.99 747208.23 1296993.67 10 1.47 74201 50562 3035236.96 746422.33 2670761.71 11 1.44 69857 48386 3035656.94 745618.43 2514405.48 12 1.34 66105 49451 3036028.92 744808.54 2379357.46 Total Volume = 43067431.87 2004 r.volume vAmhwres6fAllCrtk2004 clum=volsections centr=vAmhwres6fAllCrtk2004_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.22 4300 19502 3030863.19 753183.47 154772.51 2 4.39 229748 52278 3031451.16 752661.54 8269459.47 3 3.58 188313 52533 3031907.13 751869.64 6778064.32 4 2.72 137687 50581 3032381.11 751095.74 4955851.91 5 1.97 94604 47944 3032903.08 750315.84 3405139.30 6 1.97 93235 47409 3033359.06 749547.94 3355864.05 7 1.36 64629 47688 3033803.04 748762.03 2326230.90 8 0.82 38103 46424 3034277.01 747982.13 1371464.45 9 0.84 40627 48306 3034768.99 747208.23 1462312.32 10 1.18 59520 50562 3035236.96 746422.33 2142339.55 11 1.26 60857 48386 3035656.94 745618.43 2190463.01 12 1.19 58744 49451 3036028.92 744808.54 2114408.51 Total Volume = 38526370.29 2003 r.volume vAmhwres6fAllCrtk20030921 clum=volsections centr=vAmhwres6fAllCrtk20030921_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.18 3523 19502 3030863.19 753183.47 126805.48 2 4.31 225399 52278 3031451.16 752661.54 8112923.27 3 3.58 187865 52533 3031907.13 751869.64 6761939.18 4 2.66 134776 50581 3032381.11 751095.74 4851074.52 5 1.97 94435 47944 3032903.08 750315.84 3399056.38 6 1.85 87658 47409 3033359.06 749547.94 3155127.70 7 1.39 66243 47688 3033803.04 748762.03 2384324.58 8 0.92 42756 46424 3034277.01 747982.13 1538942.71 9 0.95 45767 48306 3034768.99 747208.23 1647319.46 10 1.18 59779 50562 3035236.96 746422.33 2151661.90 11 1.23 59731 48386 3035656.94 745618.43 2149934.20 12 1.02 50423 49451 3036028.92 744808.54 1814905.70 Total Volume = 38094015.07 r.volume vAmhwres6fAllCrtk20030916 clum=volsections centr=vAmhwres6fAllCrtk20030916_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.18 3533 19502 3030863.19 753183.47 127165.42 2 4.42 231224 52278 3031451.16 752661.54 8322586.03 3 3.67 192973 52533 3031907.13 751869.64 6945794.53 4 2.71 136981 50581 3032381.11 751095.74 4930440.43 5 2.09 100230 47944 3032903.08 750315.84 3607639.34 6 2.00 95032 47409 3033359.06 749547.94 3420544.56 7 1.56 74595 47688 3033803.04 748762.03 2684943.19 8 1.09 50548 46424 3034277.01 747982.13 1819404.90 9 1.10 53145 48306 3034768.99 747208.23 1912880.30 10 1.39 70150 50562 3035236.96 746422.33 2524951.61 11 1.47 71293 48386 3035656.94 745618.43 2566092.30 12 1.37 67832 49451 3036028.92 744808.54 2441518.42 Total Volume = 41303961.03 r.volume vAmhwres6fAllCrtk20030622 clum=volsections centr=vAmhwres6fAllCrtk20030622_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.22 4375 19502 3030863.19 753183.47 157472.04 2 4.21 219990 52278 3031451.16 752661.54 7918233.84 3 3.55 186455 52533 3031907.13 751869.64 6711188.19 4 2.66 134607 50581 3032381.11 751095.74 4844991.60 5 2.09 100354 47944 3032903.08 750315.84 3612102.54 6 1.85 87471 47409 3033359.06 749547.94 3148396.89 7 1.35 64414 47688 3033803.04 748762.03 2318492.27 8 0.86 40134 46424 3034277.01 747982.13 1444567.47 9 0.86 41535 48306 3034768.99 747208.23 1494994.51 10 1.23 62012 50562 3035236.96 746422.33 2232035.62 11 1.35 65345 48386 3035656.94 745618.43 2352002.32 12 1.26 62477 49451 3036028.92 744808.54 2248772.65 Total Volume = 38483249.95 2001 r.volume vAmhwres6fAllCrtk2001 clum=volsections centr=vAmhwres6fAllCrtk2001_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.34 6542 19502 3030863.19 753183.47 235470.18 2 4.55 237899 52278 3031451.16 752661.54 8562843.37 3 3.59 188678 52533 3031907.13 751869.64 6791201.98 4 2.53 127735 50581 3032381.11 751095.74 4597643.53 5 1.97 94683 47944 3032903.08 750315.84 3407982.79 6 1.64 77656 47409 3033359.06 749547.94 2795119.63 7 1.18 56310 47688 3033803.04 748762.03 2026800.07 8 0.70 32430 46424 3034277.01 747982.13 1167272.71 9 0.70 33981 48306 3034768.99 747208.23 1223098.80 10 1.02 51625 50562 3035236.96 746422.33 1858170.02 11 1.18 56946 48386 3035656.94 745618.43 2049692.01 12 1.12 55157 49451 3036028.92 744808.54 1985299.44 Total Volume = 36700594.52 1999 r.volume vAmhwres6fAllCrtk19991006 clum=volsections centr=vAmhwres6fAllCrtk19991006_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.31 6058 19502 3030863.19 753183.47 218049.28 2 3.95 206334 52278 3031451.16 752661.54 7426705.13 3 3.11 163568 52533 3031907.13 751869.64 5887402.49 4 2.26 114457 50581 3032381.11 751095.74 4119720.40 5 1.75 84040 47944 3032903.08 750315.84 3024902.82 6 1.58 74869 47409 3033359.06 749547.94 2694805.44 7 1.41 67161 47688 3033803.04 748762.03 2417366.71 8 0.83 38568 46424 3034277.01 747982.13 1388201.48 9 0.76 36771 48306 3034768.99 747208.23 1323520.96 10 0.91 45923 50562 3035236.96 746422.33 1652934.46 11 1.13 54738 48386 3035656.94 745618.43 1970218.12 12 1.14 56324 49451 3036028.92 744808.54 2027303.98 Total Volume = 34151131.27 r.volume vAmhwres6fAllCrtk19990918 clum=volsections centr=vAmhwres6fAllCrtk19990918_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.30 5791 19502 3030863.19 753183.47 208438.98 2 3.85 201428 52278 3031451.16 752661.54 7250120.49 3 3.04 159540 52533 3031907.13 751869.64 5742420.23 4 2.10 106447 50581 3032381.11 751095.74 3831411.60 5 1.62 77768 47944 3032903.08 750315.84 2799150.91 6 1.56 73877 47409 3033359.06 749547.94 2659099.78 7 1.36 64771 47688 3033803.04 748762.03 2331341.99 8 0.83 38679 46424 3034277.01 747982.13 1392196.77 9 0.73 35347 48306 3034768.99 747208.23 1272266.06 10 0.88 44540 50562 3035236.96 746422.33 1603155.30 11 1.09 52883 48386 3035656.94 745618.43 1903449.98 12 1.15 56825 49451 3036028.92 744808.54 2045336.78 Total Volume = 33038388.87 r.volume vAmhwres6fAllCrtk19990909 clum=volsections centr=vAmhwres6fAllCrtk19990909_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.28 5416 19502 3030863.19 753183.47 194941.38 2 3.89 203433 52278 3031451.16 752661.54 7322287.67 3 3.02 158424 52533 3031907.13 751869.64 5702251.37 4 2.10 106154 50581 3032381.11 751095.74 3820865.47 5 1.57 75055 47944 3032903.08 750315.84 2701500.25 6 1.47 69506 47409 3033359.06 749547.94 2501771.72 7 1.32 62953 47688 3033803.04 748762.03 2265905.61 8 0.83 38658 46424 3034277.01 747982.13 1391440.90 9 0.77 37170 48306 3034768.99 747208.23 1337882.41 10 0.88 44248 50562 3035236.96 746422.33 1592645.17 11 1.10 53087 48386 3035656.94 745618.43 1910792.67 12 1.16 57447 49451 3036028.92 744808.54 2067724.80 Total Volume = 32810009.43 1998 r.volume vAmhwres6fAllCrtk19980907 clum=volsections centr=vAmhwres6fAllCrtk19980907_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.29 5692 19502 3030863.19 753183.47 204875.62 2 3.94 205839 52278 3031451.16 752661.54 7408888.29 3 3.39 178147 52533 3031907.13 751869.64 6412153.30 4 2.37 119890 50581 3032381.11 751095.74 4315273.67 5 1.99 95366 47944 3032903.08 750315.84 3432566.43 6 1.76 83643 47409 3033359.06 749547.94 3010613.36 7 1.80 85970 47688 3033803.04 748762.03 3094370.49 8 1.18 54564 46424 3034277.01 747982.13 1963955.23 9 1.02 49317 48306 3034768.99 747208.23 1775096.77 10 1.19 60117 50562 3035236.96 746422.33 2163827.74 11 1.36 65689 48386 3035656.94 745618.43 2364384.12 12 1.53 75729 49451 3036028.92 744808.54 2725759.95 Total Volume = 38871764.95 r.volume vAmhwres6fAllCrtk19970926 clum=volsections centr=vAmhwres6fAllCrtk19970926_ctr Cat Average Data # Cells Centroid Total Number in clump Total in clump Easting Northing Volume 1 0.29 5665 19502 3030863.19 753183.47 203903.79 2 3.66 191286 52278 3031451.16 752661.54 6885073.31 3 3.40 178519 52533 3031907.13 751869.64 6425542.92 4 2.60 131735 50581 3032381.11 751095.74 4741617.96 5 2.24 107424 47944 3032903.08 750315.84 3866577.35 6 1.90 90307 47409 3033359.06 749547.94 3250474.76 7 1.75 83504 47688 3033803.04 748762.03 3005610.25 8 1.19 55416 46424 3034277.01 747982.13 1994621.78 9 1.10 53101 48306 3034768.99 747208.23 1911296.58 10 1.21 61274 50562 3035236.96 746422.33 2205472.34 11 1.41 68402 48386 3035656.94 745618.43 2462034.78 12 1.71 84688 49451 3036028.92 744808.54 3048226.68 Total Volume = 40000452.52