USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

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USGS 111626182 PILARCITOS C BL SPILLWAY NR HILLSBOROUGH CA

San Mateo County, California

Hydrologic Unit Code 18050006

Latitude 37°32'51.7", Longitude 122°25'15.2" NAD83

Drainage area 4.0 square miles

Gage datum 613.50 feet above NAVD88

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Meas. Number	Date Time	Time Datum	Measurement Used?	Who	Measuring Agency	Stream flow (ft³/s)	Gage Height (ft)	GH Change (ft)	Meas. Duration (hr)	Meas. Rated	Control	Flow Adjust. Code
44	2025-11-20 11:05	PST	Yes	MDAVAULT	USGS	1.51	2.38	0.00	0.50	Fair	DebrisHeavy	NONE
43	2025-08-14 14:02:13	PDT	Yes	MDAVAULT	USGS	2.08	2.43	0.00	0.50	Fair	DebrisHeavy	NONE
42	2025-07-03 10:55:46	PDT	Yes	AGUERRIE	USGS	2.33	2.45	0.00	0.80	Poor	Clear	NONE
41	2025-05-22 10:26:10	PDT	Yes	MDAVAULT	USGS	2.15	2.41	0.00	0.40	Fair	DebrisModerate	NONE
40	2025-04-01 09:01:22	PDT	Yes	MDAVAULT/MRO	USGS	0.90	2.28	0.00	0.70	Fair	DebrisHeavy	NONE
39	2025-03-03 10:05:46	PST	Yes	MDAVAULT	USGS	0.97	2.28	0.00	0.60	Fair	VegetationHeavy	NONE
38	2025-01-07 10:13:30	PST	Yes	MDAVAULT	USGS	2.03	2.52	0.00	0.70	Fair	DebrisHeavy	NONE
37	2024-11-27 09:14:55	PST	Yes	MDAVAULT	USGS	5.40	2.81	0.00	0.60	Fair	DebrisModerate	NONE
36	2024-10-08 10:52:10	PDT	Yes	MDAVAULT	USGS	1.74	2.45	0.00	0.60	Fair	DebrisHeavy	NONE
35	2024-08-26 10:32:45	PDT	Yes	MDAVAULT	USGS	0.77	2.30	0.00	0.50	Fair	DebrisHeavy	NONE
34	2024-07-17 11:21:41	PDT	Yes	DAVAULT	USGS	1.57	2.42	-0.01	0.80	Fair	DebrisHeavy	NONE
33	2024-05-30 10:51:05	PDT	Yes	MDAVAULT	USGS	2.21	2.50	0.00	0.40	Fair	DebrisHeavy	NONE
32	2024-04-11 10:05:55	PDT	Yes	MDAVAULT	USGS	1.14	2.42	0.00	0.40	Fair	DebrisHeavy	NONE
31	2024-02-28 10:23:38	PST	Yes	MDAVAULT	USGS	0.44	2.31	0.00	0.40	Fair	DebrisHeavy	NONE
30	2024-01-05 09:41:58	PST	Yes	MDAVAULT/LTA	USGS	2.51	2.68	-0.01	0.50	Fair	DebrisModerate	NONE
29	2023-11-20 10:00:59	PST	Yes	MDAVAULT	USGS	2.68	2.62	0.00	0.60	Fair	DebrisHeavy	NONE
28	2023-10-05 09:29:45	PDT	Yes	MDAVAULT	USGS	2.33	2.56	0.00	0.60	Good	DebrisHeavy	NONE
27	2023-09-08 14:03:46	PDT	Yes	MDAVAULT	USGS	1.01	2.43	0.00	0.50	Fair	DebrisHeavy	NONE
26	2023-08-07 10:03:38	PDT	Yes	MDAVAULT	USGS	1.37	2.50	0.00	0.60	Fair	DebrisHeavy	NONE
25	2023-06-29 10:05:41	PDT	Yes	MDAVAULT	USGS	1.21	2.54	0.00	0.60	Good	DebrisHeavy	NONE
24	2023-05-10 09:59:19	PDT	Yes	MDAVAULT	USGS	6.44	3.00	0.00	0.90	Fair	DebrisModerate	NONE
23	2023-03-27 16:43:30	PDT	Yes	MDAVAULT/SKE	USGS	52.4	4.10	0.00	0.60	Good	DebrisHeavy	NONE
22	2023-02-09 15:24:50	PST	Yes	MDAVAULT/TAG	USGS	11.5	3.24	0.00	0.60	Poor	DebrisHeavy	NONE
21	2022-12-29 11:46:32	PST	Yes	MDAVAULT	USGS	1.40	2.45	0.00	0.50	Fair	DebrisHeavy	NONE
20	2022-12-27 15:43:07	PST	Yes	MDAVAULT	USGS	1.53	2.49	0.00	0.60	Fair	DebrisHeavy	NONE
19	2022-11-16 15:36:59	PST	Yes	MDAVAULT	USGS	1.59	2.44	0.00	0.80	Poor	DebrisHeavy	NONE
18	2022-10-05 14:43:20	PDT	Yes	MDAVAULT	USGS	2.60	2.52	0.00	0.80	Fair	DebrisHeavy	NONE
17	2022-08-29 13:03:13	PDT	Yes	MDAVAULT	USGS	2.61	2.51	-0.03	0.80	Fair	DebrisHeavy	NONE
16	2022-07-21 10:45:52	PDT	Yes	MDAVAULT	USGS	3.46	2.52	0.00	0.50	Fair	DebrisHeavy	NONE
15	2022-06-15 12:16:16	PDT	Yes	MDAVAULT	USGS	3.31	2.37	0.00	0.50	Fair	DebrisHeavy	NONE
14	2022-05-06 10:53:01	PDT	Yes	LCANNAR	USGS	1.80	2.11	0.00	0.40	Poor	DebrisHeavy	NONE
13	2022-04-07 16:09:01	PDT	Yes	LCANNAR/SMUL	USGS	0.52	1.90	0.00	0.30	Poor	DebrisModerate	NONE
12	2022-02-28 15:13:11	PST	Yes	LCANNAR/SMUL	USGS	0.08	1.81	0.00	0.30	Poor	DebrisModerate	NONE
11F	2022-02-14 12:57	PST	No
10F	2022-02-02 14:16	PST	No
9F	2022-02-02 11:51	PST	No
8F	2022-02-02 09:50	PST	No
7F	2022-01-10 11:06	PST	No
6F	2021-12-23 17:00	PST	No
5F	2021-12-22 10:04	PST	No
4F	2021-03-01 10:33	PST	No
3F	2018-11-07 08:34	PST	No
2F	2018-01-31 11:18	PST	No
1F	2017-01-09 12:30	PST	No

Meas.
Number

Date Time

Time
Datum

Measurement
Used?

Who

Measuring
Agency

Stream
flow
(ft³/s)

Gage
Height
(ft)

GH
Change
(ft)

Meas.
Duration
(hr)

Meas.
Rated

Control

Flow
Adjust.
Code

2025-11-20 11:05

PST

Yes

MDAVAULT

USGS

1.51

2.38

0.00

0.50

Fair

DebrisHeavy

NONE

2025-08-14 14:02:13

PDT

Yes

MDAVAULT

USGS

2.08

2.43

0.00

0.50

Fair

DebrisHeavy

NONE

2025-07-03 10:55:46

PDT

Yes

AGUERRIE

USGS

2.33

2.45

0.00

0.80

Poor

Clear

NONE

2025-05-22 10:26:10

PDT

Yes

MDAVAULT

USGS

2.15

2.41

0.00

0.40

Fair

DebrisModerate

NONE

2025-04-01 09:01:22

PDT

Yes

MDAVAULT/MRO

USGS

0.90

2.28

0.00

0.70

Fair

DebrisHeavy

NONE

2025-03-03 10:05:46

PST

Yes

MDAVAULT

USGS

0.97

2.28

0.00

0.60

Fair

VegetationHeavy

NONE

2025-01-07 10:13:30

PST

Yes

MDAVAULT

USGS

2.03

2.52

0.00

0.70

Fair

DebrisHeavy

NONE

2024-11-27 09:14:55

PST

Yes

MDAVAULT

USGS

5.40

2.81

0.00

0.60

Fair

DebrisModerate

NONE

2024-10-08 10:52:10

PDT

Yes

MDAVAULT

USGS

1.74

2.45

0.00

0.60

Fair

DebrisHeavy

NONE

2024-08-26 10:32:45

PDT

Yes

MDAVAULT

USGS

0.77

2.30

0.00

0.50

Fair

DebrisHeavy

NONE

2024-07-17 11:21:41

PDT

Yes

DAVAULT

USGS

1.57

2.42

-0.01

0.80

Fair

DebrisHeavy

NONE

2024-05-30 10:51:05

PDT

Yes

MDAVAULT

USGS

2.21

2.50

0.00

0.40

Fair

DebrisHeavy

NONE

2024-04-11 10:05:55

PDT

Yes

MDAVAULT

USGS

1.14

2.42

0.00

0.40

Fair

DebrisHeavy

NONE

2024-02-28 10:23:38

PST

Yes

MDAVAULT

USGS

0.44

2.31

0.00

0.40

Fair

DebrisHeavy

NONE

2024-01-05 09:41:58

PST

Yes

MDAVAULT/LTA

USGS

2.51

2.68

-0.01

0.50

Fair

DebrisModerate

NONE

2023-11-20 10:00:59

PST

Yes

MDAVAULT

USGS

2.68

2.62

0.00

0.60

Fair

DebrisHeavy

NONE

2023-10-05 09:29:45

PDT

Yes

MDAVAULT

USGS

2.33

2.56

0.00

0.60

Good

DebrisHeavy

NONE

2023-09-08 14:03:46

PDT

Yes

MDAVAULT

USGS

1.01

2.43

0.00

0.50

Fair

DebrisHeavy

NONE

2023-08-07 10:03:38

PDT

Yes

MDAVAULT

USGS

1.37

2.50

0.00

0.60

Fair

DebrisHeavy

NONE

2023-06-29 10:05:41

PDT

Yes

MDAVAULT

USGS

1.21

2.54

0.00

0.60

Good

DebrisHeavy

NONE

2023-05-10 09:59:19

PDT

Yes

MDAVAULT

USGS

6.44

3.00

0.00

0.90

Fair

DebrisModerate

NONE

2023-03-27 16:43:30

PDT

Yes

MDAVAULT/SKE

USGS

52.4

4.10

0.00

0.60

Good

DebrisHeavy

NONE

2023-02-09 15:24:50

PST

Yes

MDAVAULT/TAG

USGS

11.5

3.24

0.00

0.60

Poor

DebrisHeavy

NONE

2022-12-29 11:46:32

PST

Yes

MDAVAULT

USGS

1.40

2.45

0.00

0.50

Fair

DebrisHeavy

NONE

2022-12-27 15:43:07

PST

Yes

MDAVAULT

USGS

1.53

2.49

0.00

0.60

Fair

DebrisHeavy

NONE

2022-11-16 15:36:59

PST

Yes

MDAVAULT

USGS

1.59

2.44

0.00

0.80

Poor

DebrisHeavy

NONE

2022-10-05 14:43:20

PDT

Yes

MDAVAULT

USGS

2.60

2.52

0.00

0.80

Fair

DebrisHeavy

NONE

2022-08-29 13:03:13

PDT

Yes

MDAVAULT

USGS

2.61

2.51

-0.03

0.80

Fair

DebrisHeavy

NONE

2022-07-21 10:45:52

PDT

Yes

MDAVAULT

USGS

3.46

2.52

0.00

0.50

Fair

DebrisHeavy

NONE

2022-06-15 12:16:16

PDT

Yes

MDAVAULT

USGS

3.31

2.37

0.00

0.50

Fair

DebrisHeavy

NONE

2022-05-06 10:53:01

PDT

Yes

LCANNAR

USGS

1.80

2.11

0.00

0.40

Poor

DebrisHeavy

NONE

2022-04-07 16:09:01

PDT

Yes

LCANNAR/SMUL

USGS

0.52

1.90

0.00

0.30

Poor

DebrisModerate

NONE

2022-02-28 15:13:11

PST

Yes

LCANNAR/SMUL

USGS

0.08

1.81

0.00

0.30

Poor

DebrisModerate

NONE

11F

2022-02-14 12:57

PST

10F

2022-02-02 14:16

PST

2022-02-02 11:51

PST

2022-02-02 09:50

PST

2022-01-10 11:06

PST

2021-12-23 17:00

PST

2021-12-22 10:04

PST

2021-03-01 10:33

PST

2018-11-07 08:34

PST

2018-01-31 11:18

PST

2017-01-09 12:30

PST