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       為了瞭解水庫淤積量及分布情形,本局每年對翡翠水庫進行淤積調查。自73年6月水庫初期蓄水至112年底止總淤積量約為 2,806 萬立方公尺,約佔水庫初期總容量(4億600萬立方公尺)之6.91%,目前翡翠水庫淤積尚屬輕微,屬健康良好之水庫。

水庫容量及淤積量一覽表

期別起訖年月間隔累計間隔剩餘總蓄水容量淤積量歷年累計淤積量歷年累計年平均淤積量歷年累計淤積率
(年)(年)(%)
初期---406000----
173.07-78.034.754.75400028597259721257 1.47
278.04-78.120.755.5399007102169931271 1.72
379.01-79.1216.539803797079631225 1.96
480.01-80.1217.539705698189441193 2.20
581.01-81.1218.539609296499081166 2.44
682.01-82.1219.5395686406103141086 2.54
783.01-83.12110.5394797889112031067 2.76
884.01-84.12111.5394311486116891016 2.88
985.01-85.12112.53908353476151651213 3.74
1086.01-86.12113.5390058777159421181 3.93
1187.01-87.12114.53886801378173201194 4.27
1288.01-88.12115.5388196484178041149 4.39
1389.01-89.12116.5387356840186441130 4.59
1490.01-90.12117.53860031353199971143 4.93
1591.01-91.12118.5385535468204651106 5.04
1692.01-92.12119.5385320215206801061 5.09
1793.01-93.12120.5384947373210531027 5.19
1894.01-94.12121.538459635121404996 5.27
1995.01-95.12122.538392167522079981 5.44
2096.01-96.12123.538357734422423954 5.52
2197.01-97.12124.538320737022793930 5.61
2298.01-98.12125.538287133623129907 5.70
2399.01-99.12126.538253034123470886 5.78
24100.01-100.12127.538223729323763864 5.85
25101.01-101.12128.538188335424117846 5.94
26102.01-102.12129.538155133224449829 6.02
27103.01-103.12130.5381136415248648156.12
28104.01-104.12131.5380571565254298076.26
29105.01-105.12132.5380039532259617996.39
30106.01-106.12133.5379737302262637846.47
31107.01-107.12134.5379461276265397696.54
32108.01-108.12135.5379115346268857576.62
33109.01-109.12136.5378861254271397446.68
34110.01-110.12137.5378556305274447326.76
35111.01-111.12138.5378179377278217236.85
36112.01-112.12139.5377945234280557106.91

本表中各容量單位均為『千立方公尺』。