We may water an irrigated field during [Chol] HaMoed or during Shemittah, either from a spring that has just begun to flow or from a spring that has not just begun to flow. However, we may not water [irrigated fields], neither with rain water nor with water from a cistern; nor may we dig ditches around grapevines.

R' Elazar ben Azaryah says: We may not dig a new irrigation canal during [Chol] HaMoed or during Shemittah.  The Sages say: We may dig a new irrigation canal during Shemittah, and repair damaged ones during [Chol] HaMoed.  We may repair damaged cisterns in the public domain and clear them out. We may repair roads, and streets, and ritual baths; provide all public needs; mark graves; and even go out [to inspect the fields] for forbidden mixtures [of seeds, during Chol HaMoed].

R' Eliezer ben Yaakov says: We may divert water from one tree to another provided that [by so doing] one does not water the entire field. Seeds that were not watered before the festival may not be watered during [Chol] HaMoed.  The Sages, however, permit [watering] in both these cases.

We may trap moles and mice in an orchard or in a grain field in the usual manner during [Chol] HaMoed and during Shemittah.  The Sages, however, say: In an orchard [we may trap] in the usual manner, but in a grain field [we may do so only] in an unusual manner.  We may block up a breach during [Chol] HaMoed, but during Shemittah we may build it up in the usual manner.

R' Meir says: We may examine negaim for the first time in order to render a lenient verdict, but not to render a stringent one.  The Sages say: [We may] not [examine a nega whether] for a lenient or for a stringent verdict.  R' Meir also said: A person may gather his father's and mother's bones [for burial], as it is a [source of] joy for him.  R' Yose says: It is [a source of] mourning for him.  A person may not inspire [lamentations] for his dead [relative], nor eulogize him during the thirty days preceding a festival.

We may not hew burial niches nor [build] tombs during [Chol] HaMoed; but we may adapt burial niches during [Chol] HaMoed; dig wash ponds during [Chol] HaMoed; and [construct] a coffin in the courtyard with the deceased.  R' Yehudah prohibits [the latter], unless the boards are at hand.

We may not take wives during [Chol] HaMoed, neither virgins nor widows, nor may levirate marriage be entered into, because it is a [source of] joy for the one who does. However, one may remarry his divorcee.  A woman may make her adornments during [Chol] HaMoed.  R' Yehudah says: She may not apply lime, because it is a disfigurement to her.

An unskilled person may sew in his usual manner, but an artisan may sew only with irregular stitches.  We may interlace [supports for] beds.  R' Yose says: We may even tighten them.

We may set up an oven, a stove, or millstones during [Chol] HaMoed.  R' Yehudah says: We may not roughen the millstones initially.

We may build a railing for a roof or for a balcony in an unskilled manner, but not in a professional manner. We may replaster the cracks and roll them [as if] with a roller, with the hand and the foot, but not with a trowel.  A hinge, or a socket, or a beam, or a lock, or a key that broke may be repaired during [Chol] HaMoed, provided that one does not plan his work for [Chol] HaMoed.  All pickled foods that can be eaten during the festival may be pickled [during Chol HaMoed].