Exhibit 21.1

NOBLE MIDSTREAM PARTNERS LP

SUBSIDIARIES

Subsidiary	Jurisdiction of Organization	Direct/Indirect Ownership Percentage Held by Noble Midstream Partners LP
Noble Midstream Services, LLC	Delaware	100	%
Colorado River LLC	Delaware	100	%
San Juan River LLC	Delaware	100	%
Green River DevCo LLC	Delaware	100	%
Laramie River LLC	Delaware	100	%
Blanco River LLC	Delaware	100	%
Gunnison River DevCo GP LLC	Delaware	100	%
Gunnison River DevCo LP	Delaware	5	%
Trinity River DevCo LLC	Delaware	100	%
Dos Rios DevCo LLC	Delaware	100	%
Advantage Pipeline, L.L.C.	Texas	50	%
Advantage Pipeline Holdings LLC	Delaware	50	%
Advantage Pipeline Logistics LLC	Texas	50	%
Advantage Pipeline Management, LLC	Texas	50	%
Black Diamond Gathering Holdings LLC	Delaware	100	%
Black Diamond Gathering LLC	Delaware	54.4	%
Black Diamond Cushing LLC	Delaware	54.4	%
Black Diamond Rockies Midstream LLC	Delaware	54.4	%
Black Diamond Rockies Storage and Terminals LLC	Delaware	54.4	%
Optimized Energy Solutions, LLC	Delaware	54.4	%
Black Diamond Cushing LLC	Delaware	54.4	%
Saddlehorn Pipeline Company, LLC	Delaware	20	%
Dos Rios Y-Grade Holdings LLC	Delaware	100	%
EPIC Y-Grade, LP	Delaware	15	%
EPIC Y-Grade GP, LLC	Delaware	15	%
EPIC Y-Grade Services, LP	Delaware	15	%
EPIC Y-Grade Logistics, LP	Delaware	15	%
EPIC Y-Grade Marketing, LP	Delaware	15	%
EPIC Y-Grade Pipeline, LP	Delaware	15	%
EPIC Propane Pipeline Holdings GP, LLC	Delaware	15	%
EPIC Propane Pipeline, LP	Delaware	15	%
EPIC Propane Pipeline Holdings, LP	Delaware	15	%
Dos Rios Crude Holdings LLC	Delaware	100	%
Dos Rios Crude Intermediate LLC	Delaware	100	%
EPIC Crude Holdings, LP	Delaware	30	%
EPIC Crude Holdings GP, LLC	Delaware	30	%
EPIC Crude Services, LP	Delaware	30	%
EPIC Crude Marketing, LP	Delaware	30	%
EPIC Crude Terminal Company, LP	Delaware	30	%
EPIC Pipeline Company, LP	Delaware	30	%
EPIC Crude Pipeline, LP	Delaware	30	%

Dos Rios Delaware Holdings LLC	Delaware	100	%
Delaware Crossing LLC	Delaware	50	%
White Cliffs Pipeline, L.L.C.	Delaware	3.33	%
Noble Midstream Marketing LLC	Delaware	100	%
Delaware Crossing Holdings LLC	Delaware	50	%
Delaware Crossing Operating LLC	Delaware	50	%
DX Constellation LLC	Delaware	50	%
NBL Midstream Holdings LLC	Delaware	100	%
Clayton Williams Pipeline LLC	Delaware	100	%