From 81273aa87bc9806136805370e0e5aa5859b1995a Mon Sep 17 00:00:00 2001
From: mroberge <mroberge@towson.edu>
Date: Fri, 4 Jun 2021 18:15:46 -0400
Subject: [PATCH] Change offset to Timedelta

All comparisons should be between pd.Timedeltas
---
 hydrofunctions/hydrofunctions.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hydrofunctions/hydrofunctions.py b/hydrofunctions/hydrofunctions.py
index e6e6135..6e243c9 100644
--- a/hydrofunctions/hydrofunctions.py
+++ b/hydrofunctions/hydrofunctions.py
@@ -581,7 +581,7 @@ def extract_nwis_df(nwis_dict, interpolate=True):
     startmin = min(starts)
     endmax = max(ends)
     # Remove all frequencies of zero from freqs list.
-    zero = to_offset("0min")
+    zero = pd.Timedelta("0min")
     freqs_no_zeros = list(filter(lambda x: x > zero, freqs))
     if len(freqs_no_zeros) > 0:
         freqmin = min(freqs)