From 728368fa479c275cd7809b3673ee393161870cdf Mon Sep 17 00:00:00 2001
From: wpbonelli <wpbonelli@gmail.com>
Date: Wed, 30 Jul 2025 23:38:28 -0400
Subject: [PATCH] what is an xarray index but a dim group

---
 flopy4/mf6/gwf/dis.py | 3 ---
 flopy4/mf6/spec.py    | 2 --
 flopy4/mf6/tdis.py    | 2 +-
 flopy4/spec.py        | 2 --
 4 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/flopy4/mf6/gwf/dis.py b/flopy4/mf6/gwf/dis.py
index 261560ad..d39b8f4d 100644
--- a/flopy4/mf6/gwf/dis.py
+++ b/flopy4/mf6/gwf/dis.py
@@ -27,21 +27,18 @@ class Dis(Package):
         coord="lay",
         scope="gwf",
         default=1,
-        group="grid",
     )
     ncol: int = dim(
         block="dimensions",
         coord="col",
         scope="gwf",
         default=2,
-        group="grid",
     )
     nrow: int = dim(
         block="dimensions",
         coord="row",
         scope="gwf",
         default=2,
-        group="grid",
     )
     delr: NDArray[np.float64] = array(
         block="griddata",
diff --git a/flopy4/mf6/spec.py b/flopy4/mf6/spec.py
index 8f0d566a..965a89e4 100644
--- a/flopy4/mf6/spec.py
+++ b/flopy4/mf6/spec.py
@@ -56,7 +56,6 @@ def dim(
     eq=True,
     init=True,
     metadata=None,
-    group=None,
     block: str | None = None,
 ):
     """Define a dimension field."""
@@ -72,7 +71,6 @@ def dim(
         eq=eq,
         init=init,
         metadata=metadata,
-        group=group,
     )
 
 
diff --git a/flopy4/mf6/tdis.py b/flopy4/mf6/tdis.py
index 33fc7af2..ee54337f 100644
--- a/flopy4/mf6/tdis.py
+++ b/flopy4/mf6/tdis.py
@@ -20,7 +20,7 @@ class PeriodData:
         nstp: int
         tsmult: float
 
-    nper: int = dim(block="dimensions", coord="per", default=1, scope=ROOT, group="time")
+    nper: int = dim(block="dimensions", coord="per", default=1, scope=ROOT)
     time_units: Optional[str] = field(block="options", default=None)
     start_date_time: Optional[datetime] = field(block="options", default=None)
     perlen: NDArray[np.float64] = array(
diff --git a/flopy4/spec.py b/flopy4/spec.py
index e719706e..3d9b5ddb 100644
--- a/flopy4/spec.py
+++ b/flopy4/spec.py
@@ -42,7 +42,6 @@ def dim(
     eq=True,
     init=True,
     metadata=None,
-    group=None,
 ):
     """Define a dimension field."""
     return xattree_dim(
@@ -53,7 +52,6 @@ def dim(
         eq=eq,
         init=init,
         metadata=metadata,
-        group=group,
     )